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자연과학대학
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Journal papers
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Study of spin-phonon coupling in multiferroic BiFeO3 through Raman spectroscopy
Title
Study of spin-phonon coupling in multiferroic BiFeO3 through Raman spectroscopy
Authors
Nguyen T.M.H.
;
Nguyen X.N.
;
Chen X.-B.
;
To X.T.
;
Lee S.
;
Nguyen T.H.
;
Yang I.-S.
Ewha Authors
양인상
SCOPUS Author ID
양인상
Issue Date
2020
Journal Title
Journal of Molecular Structure
ISSN
0022-2860
Citation
Journal of Molecular Structure vol. 1222
Keywords
Multiferroic BiFeO3
;
Raman scattering
;
Spin-phonon coupling
;
Spin-reorientation transition
Publisher
Elsevier B.V.
Indexed
SCIE; SCOPUS
Document Type
Article
Abstract
Spin-phonon coupling in multiferroic BiFeO3 single crystal is studied through temperature dependant polarized Raman spectroscopy. The phonon hardening appears at 200 K and becomes stronger below ~135 K. Clear anomalous temperature dependence of the phonon hardening near the magnetic transitions evidence the presence of a spin-phonon coupling in BiFeO3. Different phonon modes show very distinct spin-phonon coupling behaviors. Possible interpretations of the anomalous of the phonon hardening are discussed. We suggest that the phonon hardening would be correlated to spin reorientation and partially influenced by strains of Bi vacancies. © 2020
DOI
10.1016/j.molstruc.2020.128884
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