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• Valasek, J. (1920) Piezoelectric and allied phenomena in rochelle salt. Am. Phys. Soc., 15, 537.
• Valasek, J. (1921) Piezo-electric and allied phenomena in rochelle salt. Phys. Rev., 17, 475-481.
• Scott, J.F. (2000) Ferroelectric Memories, Springer Series in Advanced Microelectronics, Springer, Berlin, pp. 1-132.
• Tsymbal, E.Y. and Kohlstedt, H. (2006) Tunneling across a ferroelectric. Science, 313, 181-183.
• Maksymovych, P., Jesse, S., Yu, P., Ramesh, R., Baddorf, A., and Kalinin, S.V. (2009) Polarization control of electron tunneling into ferroelectric surfaces. Science, 324, 1421.
• García, V., Fusil, S., Bouzehouane, K., Enouz-Vedrenne, S., Mathur, N., Barthelemy, A., and Bibes, M. (2009) Giant tunnel electroresistance for nondestructive readout of ferroelectric states. Nature, 460, 81-84.
• Garćia, V., Bibes,M., Bocher, L., Valencia, S., Kronast, F., Crassous, A., Moya, X., Enouz-Vedrenne, S., Gloter, A., Imhoff, D., Deranolt, C., Mathur, N., Fusil, S., Bouzehouane, K., and Barthelemy, A. (2010) Ferroelectric control of spin polarization. Science, 327, 1106.
• Kohlstedt, H., Pertsev, N.A., Contreras, J.R., and Waser, R. (2005) Theoretical current-voltage characteristics of ferroelectric tunnel junctions. Phys. Rev. B, 72, 125341.
• Spaldin, N.A. (2007) in Physics of Ferroelectrics: A Modern Perspective, Topics in Applied Physics, vol. 105, Springer, Berlin, pp. 175-218.
• Shin, Y.H., Grinberg, I., Chen, I.W., and Rappe, A.M. (2007) Nucleation and growth mechanism of ferroelectric domain-wall motion. Nature, 449, 881-884.
• Highland, M.J., Fister, T.T., Richard, M.I., Fong, D.D., Fuoss, P.H., Thompson, C., Eastman, J.A., Streiffer, S.K., and Stephenson, G.B. (2010) Polarization switching without domain formation at the intrinsic coercive field in ultrathin ferroelectric PbTiO3. Phys. Rev. Lett., 105, 167601.
• Koval, S., Lasave, J., Migoni, R.L., Kohanoff, J., and Dalal, N.S. (2011) Ab Initio Studies of H-Bonded Systems: The Cases of Ferroelectric KH2PO4 and Antiferroelectric NH4H2PO4, Ferroelectrics -Characterization and Modeling, Mickaël Lallart (Ed.), ISBN: 978-953-307-455-9, InTech, Available from: http://www.intechopen.com/articles/ show/title/ab-initio-studies-of-h-bondedsystems-the-cases-of-ferroelectr ickh2po4-and-antiferroelectric-nh4h2p.
• Nalwa, H.S. (1995) Ferroelectric Polymers: Chemistry, Physics and Applications, Marcel Dekker, New York.
• Lines, M.E. and Glass, A.M. (1977) Principles and Applications of Ferroelectrics and Related Materials, Oxford University Press, Oxford.
• Strukov, B.A. and Levanyuk, A.P. (1998) Ferroelectric Phenomena in Crystals, Springer, Berlin.
• Rabe, K.M., Dawber, M., Lichtensteiger, C., Ahn, C.H., and Trisone, J.M. (2007) in Physics of Ferroelectrics: A Modern Perspective, Topics in Applied Physics, vol. 105, Springer, Berlin, pp. 1-30.
• Devonshire, A.F. (1949) Theory of barium titanate. Part I. Phil. Mag., 40, 1040-1063.
• Devonshire, A.F. (1951) Theory of barium titanate. Part II. Phil. Mag., 42, 1065-1079.
• Íñiguez, J., Ivantchev, S., Perez-Mato, J. M., and García, A. (2001) Devonshire-Landau free energy of BaTiO3 from first-principles. Phys. Rev. B, 63, 144103.
• Geneste, G. (2009) Landau free energy of ferroelectric crystals by thermodynamic integration. Phys. Rev. B, 79, 064101.
• Chandra, P. and Littlewood, P.B. (2007) in Physics of Ferroelectrics: A Modern Perspective, Topics in Applied Physics, vol. 105, Springer, Berlin, pp. 69-116.
• Martin, R.M. (2004) Electronic Structure. Basic Theory and Practical Methods, Cambridge University Press, Cambridge.
• Kohanoff, J. (2006) Electronic Structure Calculations for Solids and Molecules, Cambridge University Press, Cambridge.
• Martin, R.M. (1974) Comment on calculations of electric polarization in crystals. Phys. Rev. B, 9, 1998-1999.
• King-Smith, R.D. and Vanderbilt, D. (1993) Theory of polarization of crystalline solids. Phys. Rev. B, 47, 1651-1654.
• Resta, R. (1992) Theory of the electric polarization in crystals. Ferroelectrics, 136, 51-55.
• Resta, R. (1994) Macroscopic polarization in crystalline dielectrics: the geometric phase approach. Rev. Mod. Phys., 66, 899.
• Resta, R. and Vanderbilt, D. (2007) in Physics of Ferroelectrics: A Modern Perspective, Topics in Applied Physics, vol. 105, Springer, Berlin, pp. 31-68.
• Resta, R. (2010) Electrical polarization and orbital magnetization: the modern theories. J. Phys.: Condens. Matter, 22, 123201.
• Souza, I., Íñiguez, J., and Vanderbilt, D. (2002) First-principles approach to insulators in finite electric fields. Phys. Rev. Lett., 89, 117602.
• Umari, P. and Pasquarello, A. (2002) Ab initio molecular dynamics in a finite homogeneous electric field. Phys. Rev. Lett., 89, 157602.
• Dieguez, O. and Vanderbilt, D. (2006) First-principles calculations for insulators at constant polarization. Phys. Rev. Lett., 96, 056401.
• Stengel, M., Spaldin, N.A., and Vanderbilt, D. (2009) Electric displacement as the fundamental variable in electronic-structure calculations. Nat. Phys., 5, 304-308.
• Lines, M.E. (1969) Statistical theory for displacement ferroelectrics. Phys. Rev., 177, 797-812.
• Zhong, W., Vanderbilt, D., and Rabe, K.M. (1994) Phase transitions in BaTiO3 from first principles. Phys. Rev. Lett., 73, 1861-1864.
• Zhong, W., Vanderbilt, D., and Rabe, K.M. (1995) First-principles theory of ferroelectric phase transitions for perovskites: The case of BaTiO3. Phys. Rev. B, 52, 6301-6312.
• Sepliarsky, M., Asthagiri, A., Phillpot, S. R., Stachiotti, M.G., and Migoni, R.L. (2005) Atomic-level simulation of ferroelectricity in oxide materials. Curr. Opin. Solid State Mater. Sci., 9, 107-113.
• Sepliarsky,M., Phillpot, S.R.,Wolf, D., Stachiotti,M.G., and Migoni, R.L. (2004) Atomic-level simulation of ferroelectricity in perovskite solid solutions. Appl. Phys. Lett., 76, 3986-3988.
• Sepliarsky, M., Stachiotti, M.G., and Migoni, R.L. (2005) Surface reconstruction and ferroelectricity in PbTiO3 thin films. Phys. Rev. B, 72, 014110.
• Sepliarsky, M., Stachiotti, M.G., and Migoni, R.L. (2006) Interface effects in ferroelectric PbTiO3 ultrathin films on a paraelectric substrate. Phys. Rev. Lett., 96, 137603.
• Stachiotti, M.G. and Sepliarsky, M. (2011) Toroidal ferroelectricity in PbTiO3 nanoparticles. Phys. Rev. Lett., 106, 137601.
• Tinte, S., Stachiotti, M.G., Phillpot, S. R., Sepliarsky, M., Wolf, D., and Migoni, R.L. (2004) Ferroelectric properties of BaxSr1-xTiO3 solid solutions obtained by molecular dynamics simulations. J. Phys.: Condens. Matter, 16, 3495-3506.
• Tinte, S. and Stachiotti, M.G. (2001) Surface effects and ferroelectric phase transitions in BaTiO3 ultrathin films. Phys. Rev. B, 64, 235403.
• Cochran, W. (1960) Crystal stability and the theory of ferroelectricity. Adv. Phys., 9, 387-423.
• Cohen, R.E. (1992) Origin of ferroelectricity in perovskite oxides. Nature, 358, 136-138.
• Posternak, M., Resta, R., and Baldereschi, A. (1994) Role of covalent bonding in the polarization of perovskite oxides: the case of KNbO3. Phys. Rev. B, 50, 8911-8914.
• Harrison, W.A. (1980) Electronic Structure and the Properties of Solids, W. H. Freeman and Co., San Francisco.
• Ghosez, P., Gonze, X., and Michenaud, J.P. (1998) Dynamical atomic charges: the case of ABO3 compounds. Phys. Rev. B, 58, 6224-6240.
• Zhong, W., King-Smith, R.D., and Vanderbilt, D. (1994) Giant LO-TO splittings in perovskite ferroelectrics. Phys. Rev. Lett., 72, 3618-3621.
• Resta, R. (1999) Dynamical charges in oxides: recent advances. J. Phys. Chem. Solids, 61, 153.
• Shirane, G., Axe, J., Harada, J., and Remeika, J. (1970) Soft ferroelectric modes in lead titanate. Phys Rev B, 2, 155-159.
• Ghosez, P., Gonze, X., Lambin, P., and Michenaud, J.P. (1995) Born effective charges of bariumtitanate: band-by-band decomposition and sensitivity to structural features. Phys. Rev. B, 51, 6765.
• Ghosez, P. and Gonze, X. (2000) Bandby-band decomposition of the Born effective charges. J. Phys.: Condens. Matter, 12, 9179-9188.
• Ghosez, P., Gonze, X., and Michenaud, J.P. (1996) Coulomb interaction and ferroelectric instability of BaTiO3. Europhys. Lett., 33, 713-718.
• Slater, J.C. (1950) The Lorentz correction in barium titanate. Phys. Rev., 78, 748-761.
• Harada, J., Axe, J.D., and Shirane, G. (1971) Neutron-scattering study of soft modes in cubic BaTiO3. Phys. Rev. B, 4, 155.
• Scott, J.F. (1974) Soft-mode spectroscopy -experimental studies of structural phase transitions. Rev. Mod. Phys., 46, 83-128.
• Hill, N.A. (2000) Why are there so few magnetic ferroelectrics? J. Phys. Chem. B, 104, 6694-6709.
• Geneste, G., Bousquet, E., and Ghosez, P. (2008) New insights into the concept of ferroelectric correlation volume. J. Comput. Theor. Nanosci., 5, 1-4.
• Ghosez, P. and Junquera, J. (2006) Handbook of Theoretical and Computational Nanotechnology, vol. 9, American Scientific Publishers, Stevenson Ranch, CA, pp. 623-728.
• Rabe, K.M. and Ghosez, P. (2007) in Physics of Ferroelectrics: A Modern Perspective, Topics in Applied Physics, vol. 105, Springer, Berlin, pp. 117-174.
• Lichtensteiger, C., Dawber, M., and Triscone, J.M. (2007) in Physics of Ferroelectrics: A Modern Perspective, Topics in Applied Physics, vol. 105, Springer, Berlin, pp. 305-338.
• Dawber, M., Rabe, K.M., and Scott, J.F. (2005) Physics of thin-film ferroelectric oxides. Rev. Mod. Phys., 77, 1083-1130.
• Rabe, K.M. (2005) Theoretical investigations of epitaxial strain effects in ferroelectric oxide thin films and superlattices. Curr. Opin. Solid State Mater. Sci., 9, 122-127.
• Ponomareva, I., Naumov, I., Kornev, I., Fu, H., and Bellaiche, L. (2005) Modelling of nanoscale ferroelectrics from atomistic simulations. Curr. Opin. Solid State Mater. Sci., 9, 114-121.
• Duan, W. and Liu, Z.R. (2006) Theoretical modeling and simulations of perovskite ferroelectrics: from phenomenological approaches to ab initio. Curr. Opin. Solid State Mater. Sci., 10, 40-51.
• Scott, J.F. (2006) Nanoferroelectrics: statics and dynamics. J. Phys.: Condens. Matter, 18, R361-R386.
• Setter, N., Damjanovic, D., Eng, L., Fox, G., Gevorgian, S., Hong, S., Kingon, A., Kohlstedt, H., Park, N.Y., Stephenson, G.B., Stolitchnov, I., Taganstev, A.K., Taylor, D.V., Yamada, T., and Streiffer, S. (2006) Ferroelectric thin films: review of materials, properties, and applications. J. Appl. Phys., 100, 051606.
• Junquera, J. and Ghosez, P. (2008) First-principles study of ferroelectric oxide epitaxial thin films and superlattices: the role of the mechanical and electrical boundary conditions. J. Comput. Theor. Nanosci., 5, 2071-2088.
• Zubko, P., Gariglio, S., Gabay, M., Ghosez, P., and Triscone, J.M. (2011) Interface physics on complex oxide heterostructures. Annu. Rev. Condens. Matter Phys., 2, 141-165.
• Rondinelli, J.M. and Spaldin, N.A. (2011) Structure and properties of functional oxide thin films: insights from electronic structure calculations, http://arxiv.org/abs/1103.4418.
• Schlom, D.G., Chen, L.Q., Eom, C.B., Rabe, K.M., Streiffer, S.K., and Triscone, J.M. (2007) Strain tuning of ferroelectric thin films. Annu. Rev. Mater. Res., 37, 589-626.
• Dieguez, O. and Vanderbilt, D. (2008) First-principles modeling of strain in perovskite ferroelectric thin films. Phase Transit., 81, 607-622.
• Pertsev, N.A., Zembilgotov, A.G., and Tagantsev, A.K. (1998) Effects of mechanical boundary conditions on phase diagrams of epitaxial ferroelectric thin films. Phys. Rev. Lett., 80, 1988-1991.
• Pertsev, N.A., Zembilgotov, A.G., and Tagantsev, A.K. (1999) Effects of mechanical boundary conditions on phase diagrams of epitaxial ferroelectric thin films. Ferroelectrics, 223, 79.
• Choi, K.J., Biegaslki, M., Li, Y.L., Sharan, A., Schubert, J., Uecker, R., Reiche, P., Chen, Y.B., Pan, X.Q., Gopalan, V., Chen, L.Q., Schlom, D.G., and Eom, C.B. (2004) Enhancement of ferroelectricity in strained BaTiO3 thin films. Science, 306, 1005-1009.
• Pertsev, N.A., Tagantsev, A.K., and Setter, N. (2000) Phase transitions and strain-induced ferroelectricity in SrTiO3 epitaxial thin films. Phys. Rev. B, 61, R825-R829.
• Pertsev, N.A., Tagantsev, A.K., and Setter, N. (2002) Erratum: phase transitions and strain-induced ferroelectricity in SrTiO3 epitaxial thin films. Phys. Rev. B, 65, 219901(E).
• Haeni, J.H., Irvin, P., Chang, W., Uecker, R., Reiche, P., Li, Y.L., Choudhury, S., Tian, W., Hawley, M.E., Craigo, B., Tagantsev, A.K., Pan, X.Q., Streiffer, S.K., Chen, L.Q., Kirchoefer, S.W., Levy, J., and Schlom, D.G. (2004) Room-temperature ferroelectricity in strained SrTiO3. Nature, 430, 758-761.
• Pertsev, N.A., Kukhar, V.G., Kohlstedt, H., and Waser, R. (2003) Phase diagrams and physical properties of single-domain epitaxial Pb(Zr1xTix)O3 thin films. Phys. Rev. B, 67, 054107.
• Dieguez, O., Tinte, S., Antons, A., Bungaro, C., Neaton, J.B., Rabe, K.M., and Vanderbilt, D. (2004) Ab initio study of the phase diagram of epitaxial BaTiO3. Phys. Rev. B, 69, 212101.
• Bungaro, C. and Rabe, K.M. (2004) Epitaxially strained [001]-(PbTiO3)1/ (PbZrO3)1 superlattice and PbTiO3 from first principles. Phys. Rev. B, 69, 184101.
• Antons, A., Neaton, J.B., Rabe, K.M., and Vanderbilt, D. (2005) Tunability of the dielectric response of epitaxially strained SrTiO3 from first principles. Phys. Rev. B, 71, 024102.
• Dieguez, O., Rabe, K.M., and Vanderbilt, D. (2005) First-principles study of epitaxial strain in perovskites. Phys. Rev. B, 72, 144101.
• Bousquet, E., Spaldin, N., and Ghosez, P. (2010) Strain-induced ferroelectricity in simple rocksalt binary oxides. Phys. Rev. Lett., 104, 037601.
• Zeches, R.J., Rossell, M.D., Zhang, J.X., Hatt, A.J., He, Q., Yang, C.H., Kumar, A., Wang, C.H., Melville, A., Adamo, C., Sheng, G., Chu, Y.H., Ihlefeld, J.F., Erni, R., Ederer, C., Gopalan, V., Chen, L.Q., Schlom, D.G., Spaldin, N.A., Martin, L.W., and Ramesh, R. (2009) A strain-driven morphotropic phase boundary in BiFeO3. Science, 326, 977-980.
• Hatt, A.J., Spaldin, N.A., and Ederer, C. (2010) Strain-induced isosymmetric phase transition in BiFeO3. Phys. Rev. B, 81, 054109.
• Bea, H., Dupe, B., Fusil, S., Mattana, R., Jacquet, E., Warot-Fonrose, B., Wilhelm, F., Rogalev, A., Petit, S., Cros, V., Anane, A., Petroff, F., Bouzehouane, K., Geneste, G., Dkhil, B., Lisenkov, S., Ponomareva, I., Bellaiche, L., Bibes, M., and Barthelemy, A. (2009) Evidence for room-temperature multiferroicity in a compound with a giant axial ratio. Phys. Rev. Lett., 102, 217603.
• Wojde", J.C. and Íñiguez, J. (2010) Ab initio indications for giant magnetoelectric effects driven by structural softness. Phys. Rev. Lett., 105, 037208.
• Fennie, C.J. and Rabe, K.M. (2006) Magnetic and electric phase control in epitaxial EuTiO3 from first principles. Phys. Rev. Lett., 97, 267602.
• Lee, J.H. and Rabe, K.M. (2010) Epitaxial-strain-induced multiferroicity in SrMnO3 from first principles. Phys. Rev. Lett., 104, 207204.
• Lee, J.H., Fang, L., Vlahos, E., Ke, X., Jung, Y.W., Kourkoutis, L.F., Kim, J.W., Ryan, P.J., Heeg, T., Roeckerath, M., Goian, V., Bernhagen, M., Uecker, R., Hammel, P.C., Rabe, K.M., Kamba, S., Schubert, J., Freeland, J.W., Muller, D.A., Fennie, C.J., Schiffer, P., Gopalan, V., Johnston-Halperin, E., and Schlom, D.G. (2010) A strong ferroelectric ferromagnet created by means of spin-lattice coupling. Nature, 466, 954-959.
• Zubko, P., Catalan, G., Buckley, A., Welche, P.R.L., and Scott, J.F. (2007) Strain-gradient-induced polarization in SrTiO3 single crystals. Phys. Rev. Lett., 99, 167601.
• Catalan, G., Sinnamon, L., and Gregg, J. (2004) The effect of flexoelectricity on the dielectric properties of inhomogeneously strained ferroelectric thin films. J. Phys.: Condens. Matter, 16, 2253-2264.
• Catalan, G., Noheda, B., McAneney, J., Sinnamon, L., and Gregg, J. (2005) Strain gradients in epitaxial ferroelectrics. Phys. Rev. B, 72, 020102.
• Kogan, S.M. (1964) Piezoelectric effect during inhomogeneous deformation and acoustic scattering of carriers in crystals. Soviet Physics -Solid State, 5, 2069.
• Cross, L.E. (2006) Flexoelectric effects: charge separation in insulating solids subjected to elastic strain gradients. J. Mater. Sci., 41, 53-63.
• Resta, R. (2010) Towards a bulk theory of flexoelectricity. Phys. Rev. Lett., 105, 127601.
• Hong, J., Catalan, G., Scott, J.F., and Artacho, E. (2010) The flexoelectricity of barium and strontium titanate from first-principles. J. Phys.: Condens. Matter, 22, 112201.
• Tagantsev, A.K. (1986) Piezoelectricity and flexoelectricity in crystalline dielectrics. Phys. Rev. B, 34, 5883-5889.
• Tagantsev, A.K., (1991) Electric polarization in crystals and its response to thermal and elastic perturbation. Phase Transitions, 35, 119.
• Nagarajan, V., Prasertchoung, S., Zhao, T., Zheng, H., Ouyang, J., Ramesh, R., Tian, W., Pan, X.Q., Kim, D.M., Eom, C.B., Kohlstedt, H., and Waser, R. (2004) Size effects in ultrathin epitaxial ferroelectric heterostructures. Appl. Phys. Lett., 84, 5225-5227.
• Lichtensteiger, C., Triscone, J.M., Junquera, J., and Ghosez, P. (2005) Ferroelectricity and tetragonality in ultrathin PbTiO3 films. Phys. Rev. Lett., 94, 047603.
• Jo, J.Y., Kim, Y.S., Kim, D.H., Kim, J. D., Chang, Y.J., Kong, J.H., Park, Y.D., Song, T.K., Yoon, J.G., Jung, J.S., and Noh, T.W. (2005) Thickness-dependent ferroelectric properties in fully-strained SrRuO3/BaTiO3/SrRuO3 ultra-thin capacitors. Thin Solid Films, 486, 149-152.
• Kim, D.J., Yo, J.Y., Chang, Y.J., Chee, J.S., Yoon, J.G., Song, T.K., and Noh, T.W. (2005) Polarization relaxation induced by a depolarization field in ultrathin ferroelectric BaTiO3 capacitors. Phys. Rev. Lett., 92, 237602.
• van Helvoort, A.T.J., Dahl, O., Soleim, B.G., Holmestad, R., and Tybell, T. (2005) Imaging of out-of-plane interfacial strain in epitaxial PbTiO3/ SrTiO3 thin films. Appl. Phys. Lett., 86, 092907.
• Junquera, J. and Ghosez, P. (2003) Critical thickness for ferroelectricity in perovskite ultrathin films. Nature, 422, 506-509.
• Nagarajan, V., Junquera, J., He, J.Q., Jia, C.L., Lee, K., Kim, Y.K., Zhao, T., Ghosez, P., Rabe, K.M., Baik, S., Waser, R., and Ramesh, R. (2006) Scaling of structure and electrical properties in ultra-thin epitaxial ferroelectric heterostructures. J. Appl. Phys., 100, 051609.
• Vendik, O.G. and Zubko, S.P. (2000) Ferroelectric phase transition and maximum dielectric permittivity of displacement type ferroelectrics (BaxSr1xTiO3). J. Appl. Phys., 88, 5343-5350.
• Lookman, A., Bowman, R.M., Gregg, J.M., Kut, J., Ríos, S., Dawber, M., Ruediger, A., and Scott, J.F. (2004) Thickness independence of true phase transition temperatures in barium strontium titanate films. J. Appl. Phys., 96, 555-562.
• Kim, D.J., Jo, J.Y., Kim, Y.S., Chang, Y.J., Lee, J.S., Yoon, J.G., Song, T.K., and Noh, T.W. (2005) Polarization relaxation induced by a depolarization field in ultrathin ferroelectric BaTiO3 capacitors. Phys. Rev. Lett., 95, 237602.
• Larsen, P.K., Dormans, G.J.M., Taylor, D.J., and van Veldhoven, P.J. (1994) Ferroelectric properties and fatigue of Pb0.51Zr0.49O3 thin films of varying thickness: blocking layer model. J. Appl. Phys., 76, 2405-2413.
• Miller, S.L., Nasby, R.D., Schwank, J.R., Rodgers, M.S., and Dressendorfer, P.V. (1990) Device modeling of ferroelectric capacitors. J. Appl. Phys., 68, 6463-6471.
• Tagantsev, A.K., Landivar, M., Colla, E., and Setter, N. (1995) Identification of passive layer in ferroelectric thin-films from their switching parameters. J. Appl. Phys., 78, 2623-2630.
• Lebedev, N.I. and Sigov, A.S. (1994) Surface inhomogeneities and coercive field of thin ferroelectric films. Integr. Ferroelectr., 4, 21.
• Tagantsev, A.K. (1997) Size effects in polarization switching in ferroelectric thin films. Integr. Ferroelectr., 16, 237-244.
• Känzig, W. (1955) Space charge layer near the surface of a ferroelectric. Phys. Rev., 98, 549-550.
• Yoo, I.K. and Desu, S.B. (1992) Mechanism of fatigue in ferroelectric thin-films. Phys. Stat. Sol. A, 133, 565-573.
• Dawber, M. and Scott, J.F. (2000) A model for fatigue in ferroelectric perovskite thin films. Appl. Phys. Lett., 76, 1060-1062.
• Lo, V.C. (2002) Modeling the role of oxygen vacancy on ferroelectric properties in thin films. J. Appl. Phys., 92, 6778-6786.
• Black, C. and Welser, J. (1999) Electricfield penetration into metals: consequences for high-dielectricconstant capacitors. IEEE Trans. Electron Devices, 46, 776-780.
• Mehta, R.R., Silverman, B.D., and Jacobs, J.T. (1973) Depolarization fields in thin ferroelectric films. J. Appl. Phys., 44, 3379-3385.
• Batra, I.P. and Silverman, B.D. (1972) Thermodynamic stability of thin film ferroelectric films. Solid State Commun., 11, 291-294.
• Batra, I.P., Wurfel, P., and Silverman, B.D. (1973) Depolarization field and stability considerations in thin ferroelectric films. J. Vac. Sci. Technol., 10, 687-692.
• Wurfel, P., Batra, I.P., and Jacobs, J.T. (1973) Polarization instability in thin ferroelectric films. Phys. Rev. Lett., 30, 1218-1221.
• Stengel, M. and Spaldin, N.A. (2006) Origin of the dielectric dead layer in nanoscale capacitors. Nature, 443, 679-682.
• Sai, N., Kolpak, A.M., and Rappe, A.M. (2005) Ferroelectricity in ultra-thin perovskite films. Phys. Rev. B, 72, 020101.
• Gerra, G., Tagantsev, A.K., Setter, N., and Parlinski, K. (2006) Ionic polarizability of conductive metaloxides and critical thickness for ferroelectricity in BaTiO3. Phys. Rev. Lett., 96, 107603.
• Jia, C.L., Nagarajan, V., He, J.Q., Houben, L., Zhao, T., Ramesh, R., Urban, K., and Waser, R. (2007) Unitcell scale mapping of ferroelectricity and tetragonality in epitaxial ultrathin ferroelectric films. Nat. Mater., 6, 64-69.
• Chisholm, M.F., Luo, W., Oxley, M.P., Pantelides, S.T., and Lee, H.N. (2010) Atomic-scale compensation phenomena at polar interfaces. Phys. Rev. Lett., 105, 197602.
• Ramesh, R., Inam, A., Chan, W.K., Wilkens, B., Myers, K., Remschnig, K., Hart, D.L., and Tarascon, J.M. (1991) Epitaxial cuprate superconductor/ ferroelectric heterostructures. Science, 252, 944-946.
• Ramesh, R., Chan, W.K., Wilkens, B., Gilchrist, H., Sands, T., Tarascon, J.M., Keramidas, V.G., Fork, D.K., Lee, J., and Safari, A. (1992) Fatigue and retention in ferroelectric YBaCuO/ PbZrTiO/YBaCuO heterostructures. Appl. Phys. Lett., 61, 1537-1539.
• Watanabe, Y., Okano, M., and Masuda, A. (2001) Surface conduction on insulating BaTiO3 crystal suggesting an intrinsic surface electron layer. Phys. Rev. Lett., 86, 332-335.
• Spanier, J.E., Kolpak, A.M., Urban, J.J., Grinberg, I., Ouyang, L., Yun, W.S., Rappe, A.M., and Park, H. (2006) Ferroelectric phase transitions in individual single-crystalline BaTiO3 nanowires. Nano Lett., 6, 735-739.
• Fong, D.D., Kolpak, A.M., Eastman, J. A., Streiffer, S.K., Fuoss, P.H., Stephenson, G.B., Thompson, C., Kim, D.M., Choi, K.J., Eom, C.B., Grinberg, I., and Rappe, A.M. (2006) Stabilization of monodomain polarization in ultrathin PbTiO3 films. Phys. Rev. Lett., 96, 127601.
• Kolpak, A.M., Grinberg, I., and Rappe, A.M. (2007) Polarization effects on the surface chemistry of PbTiO3-supported Pt films. Phys. Rev. Lett., 98, 166101.
• Li, D., Zhao, M.H., Garra, J., Kolpak, A.M., Rappe, A.M., Bonnell, D.A., and Vohs, J.M. (2008) Direct in situ determination of the polarization dependence of physisorption on ferroelectric surfaces. Nat. Mater., 7, 473-477.
• Wang, R.V., Fong, D.D., Jiang, F., Highland, M.J., Fuoss, P.H., Thompson, C., Kolpak, A.M., Eastman, J.A., Streiffer, S.K., Rappe, A.M., and Stephenson, G.B. (2009) Reversible chemical switching of a ferroelectric film. Phys. Rev. Lett., 102, 047601.
• Stengel, M., Aguado-Puente, P., Spaldin, N.A., and Junquera, J. (2011) Band alignment at metal/ferroelectric interfaces: insights and artifacts from first principles. Phys. Rev. B, 83, 235112.
• Dawber, M., Chandra, P., Littlewood, P.B., and Scott, J.F. (2003) Depolarization corrections to the coercive field in thin-film ferroelectrics. J. Phys.: Condens. Matter, 15, L393-L398.
• Stengel, M., Vanderbilt, D., and Spaldin, N.A. (2009) First-principles modeling of ferroelectric capacitors via constrained displacement field calculations. Phys. Rev B, 80, 224110.
• Wu, X., Stengel, M., Rabe, K.M., and Vanderbilt, D. (2008) Predicting polarization and nonlinear dielectric response of arbitrary perovskite superlattice sequences. Phys. Rev. Lett., 101, 087601.
• Wu, X., Rabe, K.M., and Vanderbilt, D. (2011) Interfacial enhancement of ferroelectricity in CaTiO3/BaTiO3 superlattices. Phys. Rev. B, 83, 020104(R).
• Stengel, M., Vanderbilt, D., and Spaldin, N.A. (2009) Enhancement of ferroelectricity at metal-oxide interfaces. Nat. Mater., 8, 392-397.
• Landau, L. and Lifshitz, E. (1935) Theory of the dispersion of magnetic permeability in ferromagnetic bodies. Phys. Z. Sowjetunion, 8, 153.
• Kittel, C. (1946) Theory of the structure of ferromagnetic domains in films and small particles. Phys. Rev., 70, 965-971.
• Kittel, C. (1949) Physical theory of ferromagnetic domains. Rev. Mod. Phys., 21, 541-583.
• Mitsui, J. and Furuichi, J. (1953) Domain structure of rochelle salt and K2PO4. Phys. Rev., 90, 193-202.
• Streiffer, S.K., Eastman, J.A., Fong, D. D., Thompson, C., Munkholm, A., Murty, M.V.R., Auciello, O., Bai, G.R., and Stephenson, G.B. (2002) Observation of nanoscale 1801 stripe domains in ferroelectric PbTiO3 thin films. Phys. Rev. Lett., 89, 067601.
• Hehn, M., Padovani, S., Ounadjela, K., and Bucher, J.P. (1996) Nanoscale magnetic domain structures in epitaxial cobalt films. Phys. Rev. B, 54, 3428-3433.
• Hubert, A. and Schäfer, R. (1998) Magnetic Domains, Springer, Berlin.
• Meyer, B. and Vanderbilt, D. (2002) Ab initio study of ferroelectric domain walls in PbTiO3. Phys. Rev. B, 65, 104111.
• Catalan, G., Scott, J.F., Schilling, A., and Gregg, J.M. (2007) Wall thickness dependence of the scaling law for ferroic stripe domains. J. Phys.: Condens. Matter, 19, 022201.
• Schilling, A., Adams, T.B., Bowman, R.M., Gregg, J.M., Catalan, G., and Scott, J.F. (2006) Scaling of domain periodicity with thickness measured in BaTiO3 single crystal lamellae and comparison with other ferroics. Phys. Rev. B, 74, 024115.
• Lai, B.K., Ponomareva, I., Kornev, I., Bellaiche, L., and Salamo, G.J. (2007) Thickness dependence of 1801 stripe domains in ferroelectric ultrathin films: a first-principles based study. Appl. Phys. Lett., 91, 152909.
• Fong, D.D., Stephenson, G.B., Streiffer, S.K., Eastman, J.A., Auciello, O., Fuoss, P.H., and Thompson, C. (2004) Ferroelectricity in ultrathin perovskite films. Science, 304, 1650-1653.
• Catalan, G., Schilling, A., Scott, J.F., and Gregg, J.M. (2007) Domains in three-dimensional ferroelectric nanostructures: theory and experiment. J. Phys.: Condens. Matter, 19, 132201.
• Kopal, A., Bahnik, T., and Fousek, J. (1997) Domain formation in thin ferroelectric films: the role of depolarization energy. Ferroelectrics, 202, 267-274.
• Bjorkstam, J.L. and Oettel, R.E. (1967) 180 degrees domain formation in ferroelectrics with shorted electrodes. Phys. Rev., 159, 427.
• Bratkovsky, A.M. and Levanyuk, A.P. (2000) Abrupt appearance of the domain pattern and fatigue of thin ferroelectric films. Phys. Rev. Lett., 84, 3177-3190.
• Pompe, W., Gong, X., Suo, Z., and Speck, J.S. (1993) Elastic energy-release due to domain formation in the strained epitaxy of ferroelectric and ferroelastic films. J. Appl. Phys., 74, 6012-6019.
• Pertsev, N.A. and Zembilgotov, A.G. (1995) Energetics and geometry of 90-degrees domain-structures in epitaxial ferroelectric and ferroelastic films. J. Appl. Phys., 78, 6170-6180.
• Bratkovsky, A.M. and Levanyuk, A.P. (2001) Phase transitions, stability, and dielectric response of the domain structure in ferroelectric-ferroelastic thin films. Phys. Rev. Lett., 86, 3642-3645.
• Stephenson, G.B. and Elder, K.R. (2006) Theory for equilibrium 1801 stripe domains in PbTiO3 films. J. Appl. Phys., 100, 051601.
• Prosandeev, S. and Bellaiche, L. (2007) Asymmetric screening of the depolarizing field in a ferroelectric thin film. Phys. Rev. B, 75, 172109.
• Aguado-Puente, P. and Junquera, J. (2008) Ferromagneticlike closure domains in ferroelectric ultrathin films: first principles simulations. Phys. Rev. Lett., 100, 177601.
• Shimada, T., Tomoda, S., and Kitamura, T. (2010) Ab initio study of ferroelectric closure domains in ultrathin PbTiO3 films. Phys. Rev. B, 81, 144116.
• Kornev, I., Fu, H., and Bellaiche, L. (2004) Ultrathin films of ferroelectric solid solutions under a residual depolarizing field. Phys. Rev. Lett., 93, 196104.
• Lai, B.K., Ponomareva, I., Naumov, I.I., Kornev, I., Fu, H., Bellaiche, L., and Salamo, G.J. (2006) Electric-fieldinduced domain evolution in ferroelectric ultra-thin films. Phys. Rev. Lett., 96, 137602.
• Ponomareva, I. and Bellaiche, L. (2006) Influence of the growth direction on properties of ferroelectric ultrathin films. Phys. Rev. B, 74, 064102.
• Wu, Z., Huang, N., Liu, Z.,Wu, J., Duan, W., Gu, B.L., and Zhang, X.W. (2004) Ferroelectricity in Pb(Zr0.5Ti0.5) O3 thin films: critical thickness and 180° stripe domains. Phys. Rev. B, 70, 104108.
• Prosandeev, S., Lisenkov, S., and Bellaiche, L. (2010) Kittel law in BiFeO3 ultrathin films: a firstprinciples-based study. Phys. Rev. Lett., 105, 147603.
• Lisenkov, S., Ponomareva, I., and Bellaiche, L. (2009) Unusual static and dynamical characteristics of domain evolution in ferroelectric superlattices. Phys. Rev. B, 79, 024101.
• Paruch, P., Giamarchi, T., and Triscone, J.M. (2007) in Physics of Ferroelectrics: A Modern Perspective, Topics in Applied Physics, vol. 105, Springer, Berlin, pp. 339-362.
• Catalan, G., Bea, H., Fusil, S., Bibes, M., Paruch, P., Barthelemy, A., and Scott, J.F. (2008) Fractal dimension and size scaling of domains in thin films of multiferroic BiFeO3. Phys. Rev. Lett., 100, 027602.
• Tangantsev, A.K., Cross, L.E., and Fousek J. (2010) Domains in Ferroic Crystals and Thin Films, XIII. Springer.
• Urban, J.J., Yun, W.S., Gu, Q., and Park, H. (2002) Synthesis of singlecrystalline perovskite nanorods composed of barium titanate and strontium titanate. J. Am. Chem. Soc., 124, 1186-1187.
• Yun,W.S., Urban, J.J.,Gu, Q., and Park, H. (2002) Ferroelectric properties of individual barium titanate nanowires investigated by scanned probe microscopy. Nano Lett., 2, 447-450.
• Luo, Y., Szafraniak, I., Zakharov, N.D., Nagarajan, V., Steinhart, M., Wehrspohn, R.B., Wendorff, J.H., Ramesh, R., and Alexe, M. (2003) Nanoshell tubes of ferroelectric lead zirconate titanate and barium titanate. Appl. Phys. Lett., 83, 440-442.
• O'Brien, S., Brus, L., and Murray, C.B. (2001) Synthesis of monodisperse nanoparticles of barium titanate: toward a generalized strategy of oxide nanoparticle synthesis. J. Am. Chem. Soc., 123, 12085-12086.
• Schilling, A., Byrne, D., Catalan, G., Webber, K.G., Genenko, Y.A., Wu, G. S., Scott, J.F., and Gregg, J.M. (2009) Domains in ferroelectric nanodots. Nano Lett., 9, 3359-3364.
• Liu, C., Zou, B.S., Rondinone, A.J., and Zhang, Z.J. (2001) Sol-gel synthesis of free-standing ferroelectric lead zirconate titanate nanoparticles. J. Am. Chem. Soc., 123, 4344-4345.
• Fu, H.X. and Bellaiche, L. (2003) Ferroelectricity in barium titanate quantum dots and wires. Phys. Rev. Lett., 91, 257601.
• Naumov, I.I., Bellaiche, L., and Fu, H. X. (2004) Unusual phase transitions in ferroelectric nanodisks and nanorods. Nature, 432, 737-740.
• Ponomareva, I., Naumov, I.I., Kornev, I., Fu, H., and Bellaiche, L. (2005) Atomistic treatment of depolarizing energy and field in ferroelectric nanostructures. Phys. Rev. B, 72, 140102(R).
• Prosandeev, S., Ponomareva, I., Kornev, I., Naumov, I., and Bellaiche, L. (2006) Controlling toroidal moment by means of an inhomogeneous static field: an ab study. Phys. Rev. Lett., 96, 237601.
• Prosandeev, S. and Bellaiche, L. (2007) Characteristics and signatures of dipole vortices in ferroelectric nanodots: firstprinciples-based simulations and analytical expressions. Phys. Rev. B, 75, 094102.
• Prosandeev, S. and Bellaiche, L. (2008) Controlling double vortex states in lowdimensional dipolar systems. Phys. Rev. Lett., 101, 097203.
• Prosandeev, S. and Bellaiche, L. (2009) Hypertoroidal moment in complex dipolar structures. J. Mater. Sci., 44, 5235-5248.
• Prosandeev, S., Ponomareva, I., Naumov, I., Kornev, I., and Bellaiche, L. (2008) Original properties of dipole vortices in zero-dimensional ferroelectrics. J. Phys.: Condens. Matter, 20, 193201.
• Shinjo, T., Okuno, T., Hassdorf, R., Shigeto, K., and Ono, T. (2000) Magnetic vortex core observation in circular dots of permalloy. Science, 289, 930-932.
• Wachowiak, A., Wiebe, J., Bode, M., Pietzsch, O., Morgenstern, M., and Wiesendanger, R. (2002) Direct observation of internal spin structure of magnetic vortex cores. Science, 298, 577-580.
• Choe, S.B., Acremann, Y., Scholl, A., Bauer, A., Doran, A., Stohr, J., and Padmore, H.A. (2004) Vortex coredriven magnetization dynamics. Science, 304, 420-422.
• Zhu, F.Q., Chern, G.W., Tchernyshyov, O., Zhu, X.C., Zhu, J.G., and Chien, C.L. (2006) Magnetic bistability and controllable reversal of
• Rodríguez, B.J., Gao, X.S., Liu, L.F., Lee, W., Naumov, I.I., Bratkovsky, A.M., Hesse, D., and Alexe, M. (2009) Vortex polarization states in nanoscale ferroelectric arrays. Nano Lett., 9, 1127-1131.
• Nelson, C.T., Wincheser, B., Zhang, Y., Kim, S.J., Melville, A., Adamo, C., Folkman, C.M., Baek, S.H., Eom, C.B., Schlom, D.G., Chen, L.Q., and Pan, X. (2011) Spontaneous vortex nanodomain arrays at ferroelectric heterointerfaces. Nano Lett., 11, 828-834.
• Jia, C.L., Urban, K.W., Alexe, M., Hesse, D., and Vrejoiu, I. (2011) Direct observation of continuous electric dipole rotation in flux-closure domains in ferroelectric Pb(Zr,Ti)O3. Science, 331, 1420-1423.
• McQuaid, R.G.P., McGilly, L.J., Sharma, P., Gruverman, A., and Gregg, J.M. (2011) Mesoscale fluxclosure domain formation in BaTiO3. Nature Communications, 2, 404.
• Salje, E., and Zhang, H. (2009) Domain boundary engineering. Phase Transitions, 82, 452.
• Goncalves-Ferreira, L., Redfern, S.A.T., Artacho, E., and Salje, E.K.H. (2008) Ferrielectric Twin Walls in CaTiO3. Physical Review Letters, 101, 097602.
• Aird, A., and Salje, E.K.H. (1998) Sheet superconductivity in twin walls: experimental evidence of WO3-x. J. Phys. - Condens. Mat., 10, L377.
• Seidel, J., Martin, L.W., He, Q., Zhan, Q., Chu, Y.H., Rother, A., Hawkridge, M.E., Maksymovych, P., Yu, P., Gajek, M., Balke, N., Kalinin, S. V., Gemming, S., Wang, F., Catalan, G., Scott, J.F., Spaldin, N.A., Orenstein, J., and Ramesh, R. (2009) Conduction at domain walls in oxide multiferroics. Nat. Mater., 8, 229-234.
• Yang, S.Y., Seidel, J., Byrnes, S.J., Shafer, P., Yang, C.H., Rossell, M.D., Yu, P., Chu, Y.H., Scott, J.F., Ager, J. W., Martin, L.W., and Ramesh, R. (2010) Above-bandgap voltages from ferroelectric photovoltaic devices. Nat. Nanotechnol., 5, 143-147.
• Tabata, H., Tanaka, H., and Kawai, T. (1994) Formation of artificial BaTiO3/SrTiO3 superlattices using pulsed laser deposition and their dielectric properties. Appl. Phys. Lett., 65, 1970-1972.
• Neaton, J.B. and Rabe, K.M. (2003) Theory of polarization enhancement in epitaxial BaTiO3/SrTiO3 superlattices. Appl. Phys. Lett., 82, 1586-1588.
• Dawber, M., Stucki, N., Lichtensteiger, C., Gariglio, S., Ghosez, P., and Triscone, J.M. (2007) Tailoring the properties of artificially layered ferroelectric superlattices. Adv. Mater., 19, 4153.
• Shimuta, T., Nakagawara, O., Makino, T., Arai, S., Tabata, H., and Kawai, T. (2004) Enhancement of remanent polarization in epitaxial BaTiO3/SrTiO3 superlattices with asymmetric structure. J. Appl. Phys., 91, 2290-2294.
• Tian, W., Jiang, J.C., Pan, X.Q., Haeni, J.H., Li, Y.L., Chen, L.Q., Schlom, D.G., Neaton, J.B., Rabe, K.M., and Jia, Q.X. (2006) Structural evidence for enhanced polarization in a commensurate shortperiod BaTiO3/SrTiO3 superlattice. Appl. Phys. Lett., 89, 092905.
• Tenne, D.A., Bruchhausen, A., Lanzillotti-Kimura, N.D., Fainstein, A., Katiyar, R.S., Cantarero, A., Soukiassian, A., Vaithyanathan, V., Haeni, J.H., Tian, W., Schlom, D.G., Choi, K.J., Kim, D.M., Eom, C.B., Sun, H.P., Pan, X.Q., Li, Y.L., Chen, L.Q., Jia, Q.X., Nakhmanson, S.M., Rabe, K. M., and Xi, X.X. (2006) Probing nanoscale ferroelectricity by ultraviolet Raman spectroscopy. Science, 313, 1614-1616.
• Lee, H.N., Christen, H.M., Chisholm, M.F., Rouleau, C.M., and Lowndes, D.H. (2005) Strong polarization enhancement in asymmetric threecomponent ferroelectric superlattices. Nature, 433, 395-399.
• Sai, N., Meyer, B., and Vanderbilt, D. (2000) Compositional inversion symmetry breaking in ferroelectric perovskites. Phys. Rev. Lett., 84, 5636-5639.
• Warusawithana, M.P., Colla, E.V., Eckstein, J.N., and Weissman, M.B. (2003) Artificial dielectric superlattices with broken inversion symmetry. Phys. Rev. Lett., 90, 036802.
• Lisenkov, S. and Bellaiche, L. (2007) Phase diagrams of BaTiO3/SrTiO3 superlattices from first principles. Phys. Rev. B, 76, 020102(R).
• Specht, E.D., Christen, H.M., Norton, D.P., and Boatner, L.A. (1998) X-ray diffraction measurement of the effect of layer thickness on the ferroelectric transition in epitaxial KTaO3/KNbO3 multilayers. Phys. Rev. Lett., 80, 4317-4320.
• Stephanovich, V.A., Lukyanchuk, I.A., and Karkut, M.G. (2005) Domainenhanced interlayer coupling in ferroelectric/paralectric superlattices. Phys. Rev. Lett., 94, 047601.
• Sepliarsky, M., Phillpot, S.R., Wolf, D., Stachiotti, M.G., and Migoni, R.L. (2001) Long-ranged ferroelectric interactions in perovskite superlattices. Phys. Rev. B, 64, 060101(R).
• Zubko, P., Stucki, N., Lichtensteiger, C., and Triscone, J.M. (2010) X-ray diffraction studies of 1801 ferroelectric domains in PbTiO3/SrTiO3 superlattices under applied electric fields. Phys. Rev. Lett., 104, 187601.
• Johnston, K., Huang, X., Neaton, J.B., and Rabe, K.M. (2005) First-principles study if symmetry lowering and polarization in BaTiO3/SrTiO3 superlattices with in-plane expansion. Phys. Rev. B, 71, 100103(R).
• Lee, D., Behera, R.K., Wu, P., Xu, H., Li, Y.L., Sinnott, S.B., Phillpot, S.R., Chen, L.Q., and Gopalan, V. (2009) Mixed Bloch-Neel-Ising character of 1801 ferroelectric domain walls. Phys. Rev. B, 80, 060102.
• Jiang, A.Q., Scott, J.F., Lu, H., and Chen, Z. (2003) Phase transitions and polarizations in epitaxial BaTiO3/ SrTiO3 superlattices studied by secondharmonic generation. J. Appl. Phys., 93, 1180-1185.
• Li, Y.L., Hu, S.Y., Tenne, D., Soukiassian, A., Schlom, D.G., Chen, L.Q., Xi, X.X., Choi, K.J., Eom, C.B., Saxena, A., Lookman, T., and Jia, Q.X. (2007) Interfacial coherency and ferroelectricity of BaTiO3/SrTiO3 superlattice films. Appl. Phys. Lett., 91, 252904.
• O'Neill, D., Bowman, R.M., and Gregg, J.M. (2000) Dielectric enhancement and Maxwell-Wagner effects in ferroelectric superlattice structures. Appl. Phys. Lett., 77, 1520-1522.
• Gregg, J.M. (2003) The many surprises of ferroelectric superlattices. J. Phys.: Condens. Matter, 15, V11.
• Munkholm, A., Streiffer, S.K., Murty, M.V.R., Eastman, J.A., Thompson, C., Auciello, O., Thompson, L., Moore, J. F., and Stephenson, G.B. (2002) Antiferrodistortive reconstruction of the PbTiO3 (001) surface. Phys. Rev. Lett., 88, 016101.
• Bickel, N., Schmidt, G., Heinz, K., and Müller, K. (1989) Ferroelectric relaxation of the SrTiO3(100) surface. Phys. Rev. Lett., 62, 2009-2011.
• Ghosez, P. and Triscone, J.M. (2011) Coupling of three lattice instabilities. Nat. Mater., 10, 269.
• Bousquet, E., Dawber, M., Stucki, N., Lichtensteiger, C., Hermet, P., Gariglio, S., Triscone, J.M., and Ghosez, P. (2008) Improper ferroelectricity in perovskite oxide artificial superlattices. Nature, 452, 732-726.
• Levanyuk, A.P. and Sannikov, D.G. (1974) Improper ferroelectrics. Uspekhi Fizicheskikh Nauk, 112, 561-589.
• Sai, N., Fennie, C.J., and Demkov, A.A. (2009) Absence of critical thickness in an ultrathin improper ferroelectric film. Phys. Rev. Lett., 102, 107601.
• Benedek, N.A. and Fennie, C.J. (2011) Hybrid improper ferroelectricity: a mechanism for controllable polarization-magnetization coupling. Phys. Rev. Lett., 106, 107204.