Terahertz spectroscopy of multiferroic EuFe3(BO 3)4

K. N. Boldyrev; T. N. Stanislavchuk; S. A. Klimin; M. N. Popova; L. N. Bezmaternykh

doi:10.1016/j.physleta.2012.06.028

Terahertz spectroscopy of multiferroic EuFe₃(BO ₃)₄

K. N. Boldyrev, T. N. Stanislavchuk, S. A. Klimin, M. N. Popova, L. N. Bezmaternykh

Physics

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

19 Scopus citations

Abstract

The terahertz spectra of a rare-earth iron borate with the huntite structure are obtained for the first time. We study the low-temperature (4.0-90 K) α-polarized transmittance spectra of the EuFe₃(BO ₃)₄ single crystal in the region 0.9-6.0 THz. Pronounced shifts of phonon frequencies and appearance of new phonon modes at the temperature ^TS=58 K of the R32→P3₁21 structural phase transition are observed. Additional shifts of phonon frequencies occur at the temperature ^TN=34 K of the magnetic ordering of the Fe subsystem, thus evidencing the spin-phonon coupling in this multiferroic material.

Original language	English (US)
Pages (from-to)	2562-2564
Number of pages	3
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	376
Issue number	37
DOIs	https://doi.org/10.1016/j.physleta.2012.06.028
State	Published - Jul 30 2012

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Keywords

Europium iron borate
Multiferroics
Terahertz spectroscopy

Access to Document

10.1016/j.physleta.2012.06.028

Cite this

@article{7a72b070498d4a99b2b64693c98e62d1,

title = "Terahertz spectroscopy of multiferroic EuFe3(BO 3)4",

abstract = "The terahertz spectra of a rare-earth iron borate with the huntite structure are obtained for the first time. We study the low-temperature (4.0-90 K) α-polarized transmittance spectra of the EuFe3(BO 3)4 single crystal in the region 0.9-6.0 THz. Pronounced shifts of phonon frequencies and appearance of new phonon modes at the temperature TS=58 K of the R32→P3121 structural phase transition are observed. Additional shifts of phonon frequencies occur at the temperature TN=34 K of the magnetic ordering of the Fe subsystem, thus evidencing the spin-phonon coupling in this multiferroic material.",

keywords = "Europium iron borate, Multiferroics, Terahertz spectroscopy",

author = "Boldyrev, {K. N.} and Stanislavchuk, {T. N.} and Klimin, {S. A.} and Popova, {M. N.} and Bezmaternykh, {L. N.}",

note = "Funding Information: This work was partially supported by the Russian Foundation for Basic Research under Grants No. 10-02-01071-a and No. 09-02-00171-a , by the Ministry of Education and Science under Grant НШ-4828.2012.2 , and by the Russian Academy of Sciences under the programs for basic research.",

year = "2012",

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doi = "10.1016/j.physleta.2012.06.028",

language = "English (US)",

volume = "376",

pages = "2562--2564",

journal = "Physics Letters, Section A: General, Atomic and Solid State Physics",

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TY - JOUR

T1 - Terahertz spectroscopy of multiferroic EuFe3(BO 3)4

AU - Boldyrev, K. N.

AU - Stanislavchuk, T. N.

AU - Klimin, S. A.

AU - Popova, M. N.

AU - Bezmaternykh, L. N.

N1 - Funding Information: This work was partially supported by the Russian Foundation for Basic Research under Grants No. 10-02-01071-a and No. 09-02-00171-a , by the Ministry of Education and Science under Grant НШ-4828.2012.2 , and by the Russian Academy of Sciences under the programs for basic research.

PY - 2012/7/30

Y1 - 2012/7/30

N2 - The terahertz spectra of a rare-earth iron borate with the huntite structure are obtained for the first time. We study the low-temperature (4.0-90 K) α-polarized transmittance spectra of the EuFe3(BO 3)4 single crystal in the region 0.9-6.0 THz. Pronounced shifts of phonon frequencies and appearance of new phonon modes at the temperature TS=58 K of the R32→P3121 structural phase transition are observed. Additional shifts of phonon frequencies occur at the temperature TN=34 K of the magnetic ordering of the Fe subsystem, thus evidencing the spin-phonon coupling in this multiferroic material.

AB - The terahertz spectra of a rare-earth iron borate with the huntite structure are obtained for the first time. We study the low-temperature (4.0-90 K) α-polarized transmittance spectra of the EuFe3(BO 3)4 single crystal in the region 0.9-6.0 THz. Pronounced shifts of phonon frequencies and appearance of new phonon modes at the temperature TS=58 K of the R32→P3121 structural phase transition are observed. Additional shifts of phonon frequencies occur at the temperature TN=34 K of the magnetic ordering of the Fe subsystem, thus evidencing the spin-phonon coupling in this multiferroic material.

KW - Europium iron borate

KW - Multiferroics

KW - Terahertz spectroscopy

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