Spin-phonon coupling in uniaxial anisotropic spin-glass based on Fe2TiO5 pseudobrookite

Detalhes bibliográficos
Autor(a) principal: Rodrigues, João E.F.S.
Data de Publicação: 2019
Outros Autores: Rosa, Washington S., Ferrer, Mateus M., Cunha, Thiago R., Moreno Zapata, Maximiliano Jesús, Sambrano, Julio R. [UNESP], Martínez, José L., Pizani, Paulo S., Alonso, José A., Hernandes, Antonio C., Gonçalves, Renato V.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.jallcom.2019.05.343
http://hdl.handle.net/11449/187724
Resumo: The ferric pseudobrookite is a rare example of uniaxial anisotropic spin-glass insulator, depicting a multiglass behavior and magnetoelectric coupling. Here, we present Raman spectroscopy results in order to elucidate the spin-phonon coupling in Fe2TiO5 for the first time. The experimental data are supported by computational simulations performed in view of density functional theory, which allowed us to assign the main Raman-active modes. Temperature-dependent phonon behavior exhibited anomalous evolution around 55 and 80–200 K, which was explained as successive coupling between lattice and spin configuration arising from spin freezing and short-range magnetic correlation, respectively. Arguments that the magnetoelectric effect in Fe2TiO5 is mediated by spin-phonon coupling are presented.
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spelling Spin-phonon coupling in uniaxial anisotropic spin-glass based on Fe2TiO5 pseudobrookiteAnisotropic spin-glassDFT phononFe2TiO5MagnetoelectricSpin-phonon couplingTheoretical RamanThe ferric pseudobrookite is a rare example of uniaxial anisotropic spin-glass insulator, depicting a multiglass behavior and magnetoelectric coupling. Here, we present Raman spectroscopy results in order to elucidate the spin-phonon coupling in Fe2TiO5 for the first time. The experimental data are supported by computational simulations performed in view of density functional theory, which allowed us to assign the main Raman-active modes. Temperature-dependent phonon behavior exhibited anomalous evolution around 55 and 80–200 K, which was explained as successive coupling between lattice and spin configuration arising from spin freezing and short-range magnetic correlation, respectively. Arguments that the magnetoelectric effect in Fe2TiO5 is mediated by spin-phonon coupling are presented.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Ministerio de Economía, Industria y Competitividad, Gobierno de EspañaInstituto de Ciencia de Materiales de Madrid Consejo Superior de Investigaciones Cientificas CantoblancoDepartment of Physics Federal University of São Carlos, PO Box 676São Carlos Institute of Physics University of São Paulo, PO Box 369Department of Physics Federal University of PelotasDepartamento de Física Laboratório de Cristalografia Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627Modeling and Molecular Simulations Research Group São Paulo State University UNESPModeling and Molecular Simulations Research Group São Paulo State University UNESPCNPq: 150936/2017-6FAPESP: 2013/07296-2FAPESP: 2013/07793-6FAPESP: 2017/18716-3FAPEMIG: 20170832CAPES: 88881.171031/2018-01CAPES: 88887.166861/2018-00Ministerio de Economía, Industria y Competitividad, Gobierno de España: MAT2017-84496-RCantoblancoUniversidade Federal de São Carlos (UFSCar)Universidade de São Paulo (USP)Federal University of PelotasUniversidade Federal de Minas Gerais (UFMG)Universidade Estadual Paulista (Unesp)Rodrigues, João E.F.S.Rosa, Washington S.Ferrer, Mateus M.Cunha, Thiago R.Moreno Zapata, Maximiliano JesúsSambrano, Julio R. [UNESP]Martínez, José L.Pizani, Paulo S.Alonso, José A.Hernandes, Antonio C.Gonçalves, Renato V.2019-10-06T15:45:17Z2019-10-06T15:45:17Z2019-08-30info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article563-572http://dx.doi.org/10.1016/j.jallcom.2019.05.343Journal of Alloys and Compounds, v. 799, p. 563-572.0925-8388http://hdl.handle.net/11449/18772410.1016/j.jallcom.2019.05.3432-s2.0-85066863879Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Alloys and Compoundsinfo:eu-repo/semantics/openAccess2021-10-23T15:55:02Zoai:repositorio.unesp.br:11449/187724Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:19:34.816527Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Spin-phonon coupling in uniaxial anisotropic spin-glass based on Fe2TiO5 pseudobrookite
title Spin-phonon coupling in uniaxial anisotropic spin-glass based on Fe2TiO5 pseudobrookite
spellingShingle Spin-phonon coupling in uniaxial anisotropic spin-glass based on Fe2TiO5 pseudobrookite
Rodrigues, João E.F.S.
Anisotropic spin-glass
DFT phonon
Fe2TiO5
Magnetoelectric
Spin-phonon coupling
Theoretical Raman
title_short Spin-phonon coupling in uniaxial anisotropic spin-glass based on Fe2TiO5 pseudobrookite
title_full Spin-phonon coupling in uniaxial anisotropic spin-glass based on Fe2TiO5 pseudobrookite
title_fullStr Spin-phonon coupling in uniaxial anisotropic spin-glass based on Fe2TiO5 pseudobrookite
title_full_unstemmed Spin-phonon coupling in uniaxial anisotropic spin-glass based on Fe2TiO5 pseudobrookite
title_sort Spin-phonon coupling in uniaxial anisotropic spin-glass based on Fe2TiO5 pseudobrookite
author Rodrigues, João E.F.S.
author_facet Rodrigues, João E.F.S.
Rosa, Washington S.
Ferrer, Mateus M.
Cunha, Thiago R.
Moreno Zapata, Maximiliano Jesús
Sambrano, Julio R. [UNESP]
Martínez, José L.
Pizani, Paulo S.
Alonso, José A.
Hernandes, Antonio C.
Gonçalves, Renato V.
author_role author
author2 Rosa, Washington S.
Ferrer, Mateus M.
Cunha, Thiago R.
Moreno Zapata, Maximiliano Jesús
Sambrano, Julio R. [UNESP]
Martínez, José L.
Pizani, Paulo S.
Alonso, José A.
Hernandes, Antonio C.
Gonçalves, Renato V.
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Cantoblanco
Universidade Federal de São Carlos (UFSCar)
Universidade de São Paulo (USP)
Federal University of Pelotas
Universidade Federal de Minas Gerais (UFMG)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Rodrigues, João E.F.S.
Rosa, Washington S.
Ferrer, Mateus M.
Cunha, Thiago R.
Moreno Zapata, Maximiliano Jesús
Sambrano, Julio R. [UNESP]
Martínez, José L.
Pizani, Paulo S.
Alonso, José A.
Hernandes, Antonio C.
Gonçalves, Renato V.
dc.subject.por.fl_str_mv Anisotropic spin-glass
DFT phonon
Fe2TiO5
Magnetoelectric
Spin-phonon coupling
Theoretical Raman
topic Anisotropic spin-glass
DFT phonon
Fe2TiO5
Magnetoelectric
Spin-phonon coupling
Theoretical Raman
description The ferric pseudobrookite is a rare example of uniaxial anisotropic spin-glass insulator, depicting a multiglass behavior and magnetoelectric coupling. Here, we present Raman spectroscopy results in order to elucidate the spin-phonon coupling in Fe2TiO5 for the first time. The experimental data are supported by computational simulations performed in view of density functional theory, which allowed us to assign the main Raman-active modes. Temperature-dependent phonon behavior exhibited anomalous evolution around 55 and 80–200 K, which was explained as successive coupling between lattice and spin configuration arising from spin freezing and short-range magnetic correlation, respectively. Arguments that the magnetoelectric effect in Fe2TiO5 is mediated by spin-phonon coupling are presented.
publishDate 2019
dc.date.none.fl_str_mv 2019-10-06T15:45:17Z
2019-10-06T15:45:17Z
2019-08-30
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.jallcom.2019.05.343
Journal of Alloys and Compounds, v. 799, p. 563-572.
0925-8388
http://hdl.handle.net/11449/187724
10.1016/j.jallcom.2019.05.343
2-s2.0-85066863879
url http://dx.doi.org/10.1016/j.jallcom.2019.05.343
http://hdl.handle.net/11449/187724
identifier_str_mv Journal of Alloys and Compounds, v. 799, p. 563-572.
0925-8388
10.1016/j.jallcom.2019.05.343
2-s2.0-85066863879
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Alloys and Compounds
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 563-572
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808129052252307456