Tuning Magnetoconductivity in LaMnO3 NPs through Cationic Vacancy Control

The inclusion of La-Mn vacancies in LaMnO3 nanoparticles leads to a noticeable change in conductivity behavior. The sample retains its overall insulator characteristic, with a typical thermal activation mechanism at high temperatures, but it presents high magnetoconductivity below 200 K. The activat...

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Authors: Hernando, Antonio, Ruíz-González, María Luisa, Díaz, Omar, Alonso, José M., Martínez, José L., Ayuela, Andrés, González-Calbet, José M., Cortés Gil, Raquel
Format: article
Status:Published version
Publication Date:2023
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/310515
Online Access:http://hdl.handle.net/10261/310515
Access Level:Open access
Keyword:Nanoparticles
Perovskite
Manganites
Cationic vacancies
Magnetoconductivity
Spin polarization
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spelling Tuning Magnetoconductivity in LaMnO3 NPs through Cationic Vacancy ControlHernando, AntonioRuíz-González, María LuisaDíaz, OmarAlonso, José M.Martínez, José L.Ayuela, AndrésGonzález-Calbet, José M.Cortés Gil, RaquelNanoparticlesPerovskiteManganitesCationic vacanciesMagnetoconductivitySpin polarizationThe inclusion of La-Mn vacancies in LaMnO3 nanoparticles leads to a noticeable change in conductivity behavior. The sample retains its overall insulator characteristic, with a typical thermal activation mechanism at high temperatures, but it presents high magnetoconductivity below 200 K. The activation energy decreases linearly with the square of the reduced magnetization and vanishes when the sample is magnetized at saturation. Therefore, it turns out that electron hopping between Mn3+ and Mn4+ largely contributes to the conductivity below the Curie temperature. The influence of the applied magnetic field on conductivity also supports the hypothesis of hopping contribution, and the electric behavior can be explained as being due to an increase in the hopping probability via spin alignment.This research was funded by the Spanish Ministry for Science and Innovation (MCIN/AEI/10.13039/501100011033) grant numbers MAT2017-82252-R, PID2020-113753RB-100, PID2021-122477OB-I00 and TED2021-129254B-C22.Peer reviewedMultidisciplinary Digital Publishing InstituteMinisterio de Ciencia e Innovación (España)Ministerio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2023202320232023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/310515reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2017-82252-Rinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113753RB-I00info:eu-repo/grantAgreement/AEI//PID2021-122477OB-I00info:eu-repo/grantAgreement/AEI//TED2021-129254B-C22Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3105152026-05-22T06:33:51Z
dc.title.none.fl_str_mv Tuning Magnetoconductivity in LaMnO3 NPs through Cationic Vacancy Control
title Tuning Magnetoconductivity in LaMnO3 NPs through Cationic Vacancy Control
spellingShingle Tuning Magnetoconductivity in LaMnO3 NPs through Cationic Vacancy Control
Hernando, Antonio
Nanoparticles
Perovskite
Manganites
Cationic vacancies
Magnetoconductivity
Spin polarization
title_short Tuning Magnetoconductivity in LaMnO3 NPs through Cationic Vacancy Control
title_full Tuning Magnetoconductivity in LaMnO3 NPs through Cationic Vacancy Control
title_fullStr Tuning Magnetoconductivity in LaMnO3 NPs through Cationic Vacancy Control
title_full_unstemmed Tuning Magnetoconductivity in LaMnO3 NPs through Cationic Vacancy Control
title_sort Tuning Magnetoconductivity in LaMnO3 NPs through Cationic Vacancy Control
dc.creator.none.fl_str_mv Hernando, Antonio
Ruíz-González, María Luisa
Díaz, Omar
Alonso, José M.
Martínez, José L.
Ayuela, Andrés
González-Calbet, José M.
Cortés Gil, Raquel
author Hernando, Antonio
author_facet Hernando, Antonio
Ruíz-González, María Luisa
Díaz, Omar
Alonso, José M.
Martínez, José L.
Ayuela, Andrés
González-Calbet, José M.
Cortés Gil, Raquel
author_role author
author2 Ruíz-González, María Luisa
Díaz, Omar
Alonso, José M.
Martínez, José L.
Ayuela, Andrés
González-Calbet, José M.
Cortés Gil, Raquel
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Nanoparticles
Perovskite
Manganites
Cationic vacancies
Magnetoconductivity
Spin polarization
topic Nanoparticles
Perovskite
Manganites
Cationic vacancies
Magnetoconductivity
Spin polarization
description The inclusion of La-Mn vacancies in LaMnO3 nanoparticles leads to a noticeable change in conductivity behavior. The sample retains its overall insulator characteristic, with a typical thermal activation mechanism at high temperatures, but it presents high magnetoconductivity below 200 K. The activation energy decreases linearly with the square of the reduced magnetization and vanishes when the sample is magnetized at saturation. Therefore, it turns out that electron hopping between Mn3+ and Mn4+ largely contributes to the conductivity below the Curie temperature. The influence of the applied magnetic field on conductivity also supports the hypothesis of hopping contribution, and the electric behavior can be explained as being due to an increase in the hopping probability via spin alignment.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/310515
url http://hdl.handle.net/10261/310515
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2017-82252-R
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113753RB-I00
info:eu-repo/grantAgreement/AEI//PID2021-122477OB-I00
info:eu-repo/grantAgreement/AEI//TED2021-129254B-C22
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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