Magnetic, structural, and electronic properties of the multiferroic compound FeTe2O5Br with geometrical frustration
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, K-Y | - |
dc.contributor.author | Choi, I. H. | - |
dc.contributor.author | Lemmens, P. | - |
dc.contributor.author | van Tol, J. | - |
dc.contributor.author | Berger, H. | - |
dc.date.available | 2019-03-08T22:03:27Z | - |
dc.date.issued | 2014-02 | - |
dc.identifier.issn | 0953-8984 | - |
dc.identifier.issn | 1361-648X | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/12471 | - |
dc.description.abstract | We report electron spin resonance (ESR), Raman scattering, and interband absorption measurements of the multiferroic FeTe2O5Br with two successive magnetic transitions at T-N1 = 11.0 K and T-N2 = 10.5 K. ESR measurements show all characteristics of a low-dimensional frustrated magnet: (i) the appearance of an antiferromagnetic resonance (AFMR) mode at 40 K, a much higher temperature than T-N1, and (ii) a weaker temperature dependence of the AFMR linewidth than in classical magnets, Delta H-pp(T) proportional to T-n with n = 2.2-2.3. Raman spectra at ambient pressure show a large variation of phonon intensities with temperature while there are no appreciable changes in phonon numbers and frequencies. This demonstrates the significant role of the polarizable Te4+ lone pairs in inducing multiferroicity. Under pressure at P = 2.12-3.04 GPa Raman spectra undergo drastic changes and absorption spectra exhibit an abrupt drop of a band gap. This evidences a pressure-induced structural transition related to changes of the electronic states at high pressures. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.title | Magnetic, structural, and electronic properties of the multiferroic compound FeTe2O5Br with geometrical frustration | - |
dc.type | Article | - |
dc.identifier.doi | 10.1088/0953-8984/26/8/086001 | - |
dc.identifier.bibliographicCitation | JOURNAL OF PHYSICS-CONDENSED MATTER, v.26, no.8 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000331952100009 | - |
dc.identifier.scopusid | 2-s2.0-84893848309 | - |
dc.citation.number | 8 | - |
dc.citation.title | JOURNAL OF PHYSICS-CONDENSED MATTER | - |
dc.citation.volume | 26 | - |
dc.type.docType | Article | - |
dc.publisher.location | 영국 | - |
dc.subject.keywordAuthor | multiferroics | - |
dc.subject.keywordAuthor | frustrated systems | - |
dc.subject.keywordAuthor | electron spin resonance | - |
dc.subject.keywordAuthor | Raman spectroscopy | - |
dc.subject.keywordPlus | ANTIFERROMAGNETIC-RESONANCE | - |
dc.subject.keywordPlus | POLARIZATION | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
84, Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea (06974)02-820-6194
COPYRIGHT 2019 Chung-Ang University All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.