Study of spin-phonon coupling in multiferroic BiFeO3 through Raman spectroscopy

Thi Minh Hien Nguyen; Xuan Nghia Nguyen; Xiang Bai Chen; Xuan Thang To; Seongsu Lee; Thi Huyen Nguyen; In Sang Yang

doi:10.1016/j.molstruc.2020.128884

Study of spin-phonon coupling in multiferroic BiFeO₃ through Raman spectroscopy

Thi Minh Hien Nguyen, Xuan Nghia Nguyen, Xiang Bai Chen, Xuan Thang To, Seongsu Lee, Thi Huyen Nguyen, In Sang Yang

Department of Physics

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

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.

Original language	English
Article number	128884
Journal	Journal of Molecular Structure
Volume	1222
DOIs	https://doi.org/10.1016/j.molstruc.2020.128884
State	Published - 15 Dec 2020

Bibliographical note

Publisher Copyright:
© 2020

Keywords

Multiferroic BiFeO
Raman scattering
Spin-phonon coupling
Spin-reorientation transition

Access to Document

10.1016/j.molstruc.2020.128884

Cite this

@article{4b59744d67694ba5816835bf9a23ce68,

title = "Study of spin-phonon coupling in multiferroic BiFeO3 through Raman spectroscopy",

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.",

keywords = "Multiferroic BiFeO, Raman scattering, Spin-phonon coupling, Spin-reorientation transition",

author = "Nguyen, {Thi Minh Hien} and Nguyen, {Xuan Nghia} and Chen, {Xiang Bai} and To, {Xuan Thang} and Seongsu Lee and Nguyen, {Thi Huyen} and Yang, {In Sang}",

note = "Publisher Copyright: {\textcopyright} 2020",

year = "2020",

month = dec,

day = "15",

doi = "10.1016/j.molstruc.2020.128884",

language = "English",

volume = "1222",

journal = "Journal of Molecular Structure",

issn = "0022-2860",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Study of spin-phonon coupling in multiferroic BiFeO3 through Raman spectroscopy

AU - Nguyen, Thi Minh Hien

AU - Nguyen, Xuan Nghia

AU - Chen, Xiang Bai

AU - To, Xuan Thang

AU - Lee, Seongsu

AU - Nguyen, Thi Huyen

AU - Yang, In Sang

PY - 2020/12/15

Y1 - 2020/12/15

N2 - 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.

AB - 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.

KW - Multiferroic BiFeO

KW - Raman scattering

KW - Spin-phonon coupling

KW - Spin-reorientation transition

UR - http://www.scopus.com/inward/record.url?scp=85088118786&partnerID=8YFLogxK

U2 - 10.1016/j.molstruc.2020.128884

DO - 10.1016/j.molstruc.2020.128884

M3 - Article

AN - SCOPUS:85088118786

SN - 0022-2860

VL - 1222

JO - Journal of Molecular Structure

JF - Journal of Molecular Structure

M1 - 128884

ER -