Article (Scientific journals)
Elasticity and magnetocaloric effect in MnFe4Si3
Herlitschke, Marcus; Klobes, B.; Sergueev, I. et al.
2016In Physical Review. B, 93 (9), p. 094304
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Abstract :
[en] The room temperature magnetocaloric material MnFe4Si3 was investigated with nuclear inelastic scattering (NIS) and resonant ultrasound spectroscopy (RUS) at different temperatures and applied magnetic fields in order to assess the influence of the magnetic transition and the magnetocaloric effect on lattice dynamics. The NIS data give access to phonons with energies above 3 meV, whereas RUS probes the elasticity of the material in the MHz frequency range and thus low-energy, ∼ neV, phonon modes. A significant influence of the magnetic transition on the lattice dynamics is observed only in the low-energy, long-wavelength limit. MnFe4Si3 and other compounds in the Mn5-xFexSi3 series were also investigated with vibrating sample magnetometry, resistivity measurements, and Mössbauer spectroscopy in order to study the magnetic transitions and to complement the results obtained on the lattice dynamics. © 2016 American Physical Society.
Disciplines :
Chemistry
Author, co-author :
Herlitschke, Marcus ;  FS-PE, Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany, Jülich Centre for Neutron Science JCNS, Peter Grünberg Institut PGI, JARA-FIT, Forschungszentrum Jülich GmbH, Jülich, Germany, Faculté des Sciences, Université de Liège, Liège, Belgium
Klobes, B.;  Jülich Centre for Neutron Science JCNS, Peter Grünberg Institut PGI, JARA-FIT, Forschungszentrum Jülich GmbH, Jülich, Germany
Sergueev, I.;  FS-PE, Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
Hering, P.;  Jülich Centre for Neutron Science JCNS, Peter Grünberg Institut PGI, JARA-FIT, Forschungszentrum Jülich GmbH, Jülich, Germany
Perßon, J.;  Jülich Centre for Neutron Science JCNS, Peter Grünberg Institut PGI, JARA-FIT, Forschungszentrum Jülich GmbH, Jülich, Germany
Hermann, Raphaël ;  Université de Liège - ULiège > Département de chimie (sciences) > Département de chimie (sciences)
Language :
English
Title :
Elasticity and magnetocaloric effect in MnFe4Si3
Publication date :
2016
Journal title :
Physical Review. B
ISSN :
2469-9950
eISSN :
2469-9969
Publisher :
American Physical Society
Volume :
93
Issue :
9
Pages :
094304
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
VH NG-407 “Lattice dynamics in emerging functional materials”
Funders :
HGF - Helmholtz-Gemeinschaft Deutscher Forschungszentren
DOE - United States. Department of Energy
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