Magnetoelectric coupling at room temperature in LaTiO3/SrTiO3 heterojunctions
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.materresbull.2023.112169 http://hdl.handle.net/11449/249609 |
Resumo: | This work focuses on LaTiO3 (LTO) thin films synthesized by the polymeric precursor method and deposited onto SrTiO3 (STO) substrates via spin coating. The results show interesting coexisting ferromagnetic (Mr≈2.85 emu/g) - ferroelectric (Pr≈18.5 μC/cm2) responses at room temperature. Magnetoelectric coupling can be observed under DC bias magnetic field (14 V/cm.Oe), and its dielectric constant is affected by the coupling between magnetic and electric dipoles at room temperature as well as oxygen octahedra distortion along direction a. Little film-substrate mismatch significantly influences the system dielectric properties. Our results suggest the possibility to induce ferromagnetic/ferroelectric phases in the LTO/STO heterojunctions using an electric/magnetic field, respectively, due to the magnetoelectric coupling. This study also helps comprehend oxygen vacancy dynamics when applying a tensile strain or an external electric field, which is fundamental for actuators, switches, magnetic field sensors, and new types of electronic memory devices. |
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Magnetoelectric coupling at room temperature in LaTiO3/SrTiO3 heterojunctionsChemical synthesisMott insulatorMultiferroicThin filmsThis work focuses on LaTiO3 (LTO) thin films synthesized by the polymeric precursor method and deposited onto SrTiO3 (STO) substrates via spin coating. The results show interesting coexisting ferromagnetic (Mr≈2.85 emu/g) - ferroelectric (Pr≈18.5 μC/cm2) responses at room temperature. Magnetoelectric coupling can be observed under DC bias magnetic field (14 V/cm.Oe), and its dielectric constant is affected by the coupling between magnetic and electric dipoles at room temperature as well as oxygen octahedra distortion along direction a. Little film-substrate mismatch significantly influences the system dielectric properties. Our results suggest the possibility to induce ferromagnetic/ferroelectric phases in the LTO/STO heterojunctions using an electric/magnetic field, respectively, due to the magnetoelectric coupling. This study also helps comprehend oxygen vacancy dynamics when applying a tensile strain or an external electric field, which is fundamental for actuators, switches, magnetic field sensors, and new types of electronic memory devices.School of Engineering and Sciences São Paulo State University (UNESP), Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, SPInstitute of Scientific and Technological Research in Electronics (ICYTE) University of Mar del Plata (UNMdP) and National Research Council (CONICET), Juan B. Justo 4302Institute of Materials Science and Technology Research (INTEMA) University of Mar del Plata (UNMdP) National Research Council (CONICET), Juan B. Justo 4302Advanced Materials Interdisciplinary Laboratory Federal University of Itajuba, UNIFEI – Campus Itabira, MGSchool of Engineering and Sciences São Paulo State University (UNESP), Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, SPUniversidade Estadual Paulista (UNESP)University of Mar del Plata (UNMdP) and National Research Council (CONICET)National Research Council (CONICET)Federal University of ItajubaSimoes, A. Z. [UNESP]Ortega, P. P. [UNESP]Ramirez, M. A. [UNESP]Moreno, H. [UNESP]Aldao, C. M.Ponce, M. A.Moura, F.2023-07-29T16:04:26Z2023-07-29T16:04:26Z2023-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.materresbull.2023.112169Materials Research Bulletin, v. 162.0025-5408http://hdl.handle.net/11449/24960910.1016/j.materresbull.2023.1121692-s2.0-85146973185Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Research Bulletininfo:eu-repo/semantics/openAccess2023-07-29T16:04:26Zoai:repositorio.unesp.br:11449/249609Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-07-29T16:04:26Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Magnetoelectric coupling at room temperature in LaTiO3/SrTiO3 heterojunctions |
title |
Magnetoelectric coupling at room temperature in LaTiO3/SrTiO3 heterojunctions |
spellingShingle |
Magnetoelectric coupling at room temperature in LaTiO3/SrTiO3 heterojunctions Simoes, A. Z. [UNESP] Chemical synthesis Mott insulator Multiferroic Thin films |
title_short |
Magnetoelectric coupling at room temperature in LaTiO3/SrTiO3 heterojunctions |
title_full |
Magnetoelectric coupling at room temperature in LaTiO3/SrTiO3 heterojunctions |
title_fullStr |
Magnetoelectric coupling at room temperature in LaTiO3/SrTiO3 heterojunctions |
title_full_unstemmed |
Magnetoelectric coupling at room temperature in LaTiO3/SrTiO3 heterojunctions |
title_sort |
Magnetoelectric coupling at room temperature in LaTiO3/SrTiO3 heterojunctions |
author |
Simoes, A. Z. [UNESP] |
author_facet |
Simoes, A. Z. [UNESP] Ortega, P. P. [UNESP] Ramirez, M. A. [UNESP] Moreno, H. [UNESP] Aldao, C. M. Ponce, M. A. Moura, F. |
author_role |
author |
author2 |
Ortega, P. P. [UNESP] Ramirez, M. A. [UNESP] Moreno, H. [UNESP] Aldao, C. M. Ponce, M. A. Moura, F. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) University of Mar del Plata (UNMdP) and National Research Council (CONICET) National Research Council (CONICET) Federal University of Itajuba |
dc.contributor.author.fl_str_mv |
Simoes, A. Z. [UNESP] Ortega, P. P. [UNESP] Ramirez, M. A. [UNESP] Moreno, H. [UNESP] Aldao, C. M. Ponce, M. A. Moura, F. |
dc.subject.por.fl_str_mv |
Chemical synthesis Mott insulator Multiferroic Thin films |
topic |
Chemical synthesis Mott insulator Multiferroic Thin films |
description |
This work focuses on LaTiO3 (LTO) thin films synthesized by the polymeric precursor method and deposited onto SrTiO3 (STO) substrates via spin coating. The results show interesting coexisting ferromagnetic (Mr≈2.85 emu/g) - ferroelectric (Pr≈18.5 μC/cm2) responses at room temperature. Magnetoelectric coupling can be observed under DC bias magnetic field (14 V/cm.Oe), and its dielectric constant is affected by the coupling between magnetic and electric dipoles at room temperature as well as oxygen octahedra distortion along direction a. Little film-substrate mismatch significantly influences the system dielectric properties. Our results suggest the possibility to induce ferromagnetic/ferroelectric phases in the LTO/STO heterojunctions using an electric/magnetic field, respectively, due to the magnetoelectric coupling. This study also helps comprehend oxygen vacancy dynamics when applying a tensile strain or an external electric field, which is fundamental for actuators, switches, magnetic field sensors, and new types of electronic memory devices. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T16:04:26Z 2023-07-29T16:04:26Z 2023-06-01 |
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.materresbull.2023.112169 Materials Research Bulletin, v. 162. 0025-5408 http://hdl.handle.net/11449/249609 10.1016/j.materresbull.2023.112169 2-s2.0-85146973185 |
url |
http://dx.doi.org/10.1016/j.materresbull.2023.112169 http://hdl.handle.net/11449/249609 |
identifier_str_mv |
Materials Research Bulletin, v. 162. 0025-5408 10.1016/j.materresbull.2023.112169 2-s2.0-85146973185 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Research Bulletin |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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_ |
1799965485917274112 |