Article (Scientific journals)
Origin of nonlinear magnetoelectric response in rare-earth orthoferrite perovskite oxides
Sasani, Alireza; Íñiguez, Jorge; Bousquet, Eric
2022In Physical Review. B, 105 (6)
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Keywords :
Analytical approach; Antiferromagnetic orderings; Applied magnetic fields; First principle calculations; Heisenberg models; Magnetoelectric response; Nonlinear changes; Perovskite oxides; Rare earth orthoferrites; Theoretical study; Electronic, Optical and Magnetic Materials; Condensed Matter Physics; Physics - Materials Science
Abstract :
[en] We report a theoretical study of the nonlinear magnetoelectric response of GdFeO3 through an analytical approach combined with a Heisenberg model, which is fitted against first-principles calculations. Our theory reproduces the nonlinear change of polarization under applied magnetic field reported experimentally such that it allows us to analyze the origin of the large responses in different directions. We show that the nonlinear character of the response in these materials originates from the fact that the antiferromagnetic order of Gd atoms changes nonlinearly with respect to the applied magnetic field. Our model can be generalized to other materials in which the antiferromagnetic ordering breaks inversion symmetry.
Disciplines :
Physics
Author, co-author :
Sasani, Alireza  ;  Université de Liège - ULiège > Complex and Entangled Systems from Atoms to Materials (CESAM)
Íñiguez, Jorge;  Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), Luxembourg ; Department of Physics and Materials Science, University of Luxembourg, Belvaux, Luxembourg
Bousquet, Eric  ;  Université de Liège - ULiège > Département de physique
Language :
English
Title :
Origin of nonlinear magnetoelectric response in rare-earth orthoferrite perovskite oxides
Publication date :
February 2022
Journal title :
Physical Review. B
ISSN :
2469-9950
eISSN :
2469-9969
Publisher :
American Physical Society
Volume :
105
Issue :
6
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Funding text :
This work has been funded by the Communauté Française de Belgique (ARC AIMED G.A. 15/19-09). E.B and A.S thanks the FRS-FNRS for support. J.Í. thanks the support of the Luxembourg National Research Fund through Grant No. FNR/C18/MS/12705883 “REFOX”. The authors acknowledge the CECI supercomputer facilities funded by the F.R.S-FNRS (Grant No. 2.5020.1), the Tier-1 supercomputer of the Fédération Wallonie-Bruxelles funded by the Walloon Region (Grant No. 1117545) and the OFFSPRING PRACE project.
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