Structural and physical properties of microwave synthesized orthorhombic perovskite erbium chromite ErCrO3

Rare-earth chromite ErCrO3 powder was synthesized from metal nitrate precursors using microwave synthesis. (Micro-) structural characterizations were performed using X-ray diffraction, Rietveld refinement, High Resolution Transmission Electron Microscopy and Electron Micro-Diffraction. Magnetization...

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Detalles Bibliográficos
Autores: Prado Gonjal, Jesús de la Paz, Schmidt, Rainer, Ávila Brande, David, Amador, Ulises, Morán Miguélez, Emilio
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/92285
Acceso en línea:https://hdl.handle.net/20.500.14352/92285
Access Level:acceso abierto
Palabra clave:546
Microwave processing
Microstructure
X-ray diffraction
Dielectric properties
Química inorgánica (Química)
Materiales
2303 Química Inorgánica
2210.28-1 Preparación y Caracterización de Materiales Inorgánicos
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repository_id_str
spelling Structural and physical properties of microwave synthesized orthorhombic perovskite erbium chromite ErCrO3Prado Gonjal, Jesús de la PazSchmidt, RainerÁvila Brande, DavidAmador, UlisesMorán Miguélez, Emilio546Microwave processingMicrostructureX-ray diffractionDielectric propertiesQuímica inorgánica (Química)Materiales2303 Química Inorgánica2210.28-1 Preparación y Caracterización de Materiales InorgánicosRare-earth chromite ErCrO3 powder was synthesized from metal nitrate precursors using microwave synthesis. (Micro-) structural characterizations were performed using X-ray diffraction, Rietveld refinement, High Resolution Transmission Electron Microscopy and Electron Micro-Diffraction. Magnetization vs. temperature measurements revealed anti-ferromagnetism with TNeel ≈ 135 K. An anti-ferrimagnetic moment of ≈0.4 μB was determined from magnetization vs. applied field measurements. Temperature dependent impedance spectroscopy (IS) indicated 3 dielectric relaxation processes: electrode interface, grain boundary and bulk. The intrinsic bulk activation energy was found to be 0.27 eV and the dielectric permittivity ɛr was ≈23 in excellent agreement with Clausius–Mossotti predictions and showed no perceptible temperature dependence. This and the low ɛr value suggested that ErCrO3 is a dielectric rather than ferroelectric compound. IS measurements with applied dc bias revealed the signs of an unconventional type of Schottky barrier at the metallic Au electrode/ceramic ErCrO3 interface.ElsevierUniversidad Complutense de Madrid20122012-01-0120122012-01-01journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/92285reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/922852026-06-02T12:44:21Z
dc.title.none.fl_str_mv Structural and physical properties of microwave synthesized orthorhombic perovskite erbium chromite ErCrO3
title Structural and physical properties of microwave synthesized orthorhombic perovskite erbium chromite ErCrO3
spellingShingle Structural and physical properties of microwave synthesized orthorhombic perovskite erbium chromite ErCrO3
Prado Gonjal, Jesús de la Paz
546
Microwave processing
Microstructure
X-ray diffraction
Dielectric properties
Química inorgánica (Química)
Materiales
2303 Química Inorgánica
2210.28-1 Preparación y Caracterización de Materiales Inorgánicos
title_short Structural and physical properties of microwave synthesized orthorhombic perovskite erbium chromite ErCrO3
title_full Structural and physical properties of microwave synthesized orthorhombic perovskite erbium chromite ErCrO3
title_fullStr Structural and physical properties of microwave synthesized orthorhombic perovskite erbium chromite ErCrO3
title_full_unstemmed Structural and physical properties of microwave synthesized orthorhombic perovskite erbium chromite ErCrO3
title_sort Structural and physical properties of microwave synthesized orthorhombic perovskite erbium chromite ErCrO3
dc.creator.none.fl_str_mv Prado Gonjal, Jesús de la Paz
Schmidt, Rainer
Ávila Brande, David
Amador, Ulises
Morán Miguélez, Emilio
author Prado Gonjal, Jesús de la Paz
author_facet Prado Gonjal, Jesús de la Paz
Schmidt, Rainer
Ávila Brande, David
Amador, Ulises
Morán Miguélez, Emilio
author_role author
author2 Schmidt, Rainer
Ávila Brande, David
Amador, Ulises
Morán Miguélez, Emilio
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 546
Microwave processing
Microstructure
X-ray diffraction
Dielectric properties
Química inorgánica (Química)
Materiales
2303 Química Inorgánica
2210.28-1 Preparación y Caracterización de Materiales Inorgánicos
topic 546
Microwave processing
Microstructure
X-ray diffraction
Dielectric properties
Química inorgánica (Química)
Materiales
2303 Química Inorgánica
2210.28-1 Preparación y Caracterización de Materiales Inorgánicos
description Rare-earth chromite ErCrO3 powder was synthesized from metal nitrate precursors using microwave synthesis. (Micro-) structural characterizations were performed using X-ray diffraction, Rietveld refinement, High Resolution Transmission Electron Microscopy and Electron Micro-Diffraction. Magnetization vs. temperature measurements revealed anti-ferromagnetism with TNeel ≈ 135 K. An anti-ferrimagnetic moment of ≈0.4 μB was determined from magnetization vs. applied field measurements. Temperature dependent impedance spectroscopy (IS) indicated 3 dielectric relaxation processes: electrode interface, grain boundary and bulk. The intrinsic bulk activation energy was found to be 0.27 eV and the dielectric permittivity ɛr was ≈23 in excellent agreement with Clausius–Mossotti predictions and showed no perceptible temperature dependence. This and the low ɛr value suggested that ErCrO3 is a dielectric rather than ferroelectric compound. IS measurements with applied dc bias revealed the signs of an unconventional type of Schottky barrier at the metallic Au electrode/ceramic ErCrO3 interface.
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-01-01
2012
2012-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/92285
url https://hdl.handle.net/20.500.14352/92285
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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