High-pressure effects on the resistivity and ferromagnetic transition of ceramic manganite Ca1-xyxMnO3

The effect of hydrostatic pressure up to 1 GPa on the electrical resistivity and on the ferromagnetic transition temperature T0 is systematically investigated for the electron-doped manganite Ca 1 -xYxMnO3 for low electron density (x ≤ 0.2). We find that T0 is nearly constant for pressures roughly b...

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Detalles Bibliográficos
Autores principales:	Garbarino, Gastón Leonel, Paron, Sergio Ariel, Monteverde, Miguel Hugo, Acha, Carlos Enrique, Vega, Daniel Roberto
Publicado:	2001
Materias:	Ferromagnetic transition Polaron-exchange coupling competing interactions Pressure effect Calcium Ferromagnetic materials Ferromagnetism High pressure effects Hydrostatic pressure Lanthanum compounds Manganese oxide Manganites Semiconductor doping Antiferromagnetic superexchange Competing interactions Double exchange mechanism Electron-doped manganites Electronic bandwidth Ferromagnetic transition temperatures Ferromagnetic transitions Pressure dependence Pressure effects
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03048853_v226-230_nPARTI_p843_Garbarino http://hdl.handle.net/20.500.12110/paper_03048853_v226-230_nPARTI_p843_Garbarino
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03048853_v226-230_nPARTI_p843_Garbarino
record_format	dspace
spelling	paper:paper_03048853_v226-230_nPARTI_p843_Garbarino2023-06-08T15:30:10Z High-pressure effects on the resistivity and ferromagnetic transition of ceramic manganite Ca1-xyxMnO3 Garbarino, Gastón Leonel Paron, Sergio Ariel Monteverde, Miguel Hugo Acha, Carlos Enrique Vega, Daniel Roberto Ferromagnetic transition Polaron-exchange coupling competing interactions Pressure effect Calcium Ferromagnetic materials Ferromagnetism High pressure effects Hydrostatic pressure Lanthanum compounds Manganese oxide Manganites Semiconductor doping Antiferromagnetic superexchange Competing interactions Double exchange mechanism Electron-doped manganites Electronic bandwidth Ferromagnetic transition temperatures Ferromagnetic transitions Pressure dependence Pressure effects The effect of hydrostatic pressure up to 1 GPa on the electrical resistivity and on the ferromagnetic transition temperature T0 is systematically investigated for the electron-doped manganite Ca 1 -xYxMnO3 for low electron density (x ≤ 0.2). We find that T0 is nearly constant for pressures roughly below 0.5 GPa and shows a linear increase for higher pressures, with a slope varying with the x content. Our results are discussed considering the enhancement of the electronic bandwidth with pressure related to double exchange and polaronic contributions. The unusual pressure dependence of T0 obtained can also be related to a competition scenario between double exchange mechanism and antiferromagnetic superexchange interactions proposed for electron-doped manganites. © 2001 Elsevier Science B.V. All rights reserved. Fil:Garbarino, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Parón, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Monteverde, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Acha, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vega, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2001 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03048853_v226-230_nPARTI_p843_Garbarino http://hdl.handle.net/20.500.12110/paper_03048853_v226-230_nPARTI_p843_Garbarino
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Ferromagnetic transition Polaron-exchange coupling competing interactions Pressure effect Calcium Ferromagnetic materials Ferromagnetism High pressure effects Hydrostatic pressure Lanthanum compounds Manganese oxide Manganites Semiconductor doping Antiferromagnetic superexchange Competing interactions Double exchange mechanism Electron-doped manganites Electronic bandwidth Ferromagnetic transition temperatures Ferromagnetic transitions Pressure dependence Pressure effects
spellingShingle	Ferromagnetic transition Polaron-exchange coupling competing interactions Pressure effect Calcium Ferromagnetic materials Ferromagnetism High pressure effects Hydrostatic pressure Lanthanum compounds Manganese oxide Manganites Semiconductor doping Antiferromagnetic superexchange Competing interactions Double exchange mechanism Electron-doped manganites Electronic bandwidth Ferromagnetic transition temperatures Ferromagnetic transitions Pressure dependence Pressure effects Garbarino, Gastón Leonel Paron, Sergio Ariel Monteverde, Miguel Hugo Acha, Carlos Enrique Vega, Daniel Roberto High-pressure effects on the resistivity and ferromagnetic transition of ceramic manganite Ca1-xyxMnO3
topic_facet	Ferromagnetic transition Polaron-exchange coupling competing interactions Pressure effect Calcium Ferromagnetic materials Ferromagnetism High pressure effects Hydrostatic pressure Lanthanum compounds Manganese oxide Manganites Semiconductor doping Antiferromagnetic superexchange Competing interactions Double exchange mechanism Electron-doped manganites Electronic bandwidth Ferromagnetic transition temperatures Ferromagnetic transitions Pressure dependence Pressure effects
description	The effect of hydrostatic pressure up to 1 GPa on the electrical resistivity and on the ferromagnetic transition temperature T0 is systematically investigated for the electron-doped manganite Ca 1 -xYxMnO3 for low electron density (x ≤ 0.2). We find that T0 is nearly constant for pressures roughly below 0.5 GPa and shows a linear increase for higher pressures, with a slope varying with the x content. Our results are discussed considering the enhancement of the electronic bandwidth with pressure related to double exchange and polaronic contributions. The unusual pressure dependence of T0 obtained can also be related to a competition scenario between double exchange mechanism and antiferromagnetic superexchange interactions proposed for electron-doped manganites. © 2001 Elsevier Science B.V. All rights reserved.
author	Garbarino, Gastón Leonel Paron, Sergio Ariel Monteverde, Miguel Hugo Acha, Carlos Enrique Vega, Daniel Roberto
author_facet	Garbarino, Gastón Leonel Paron, Sergio Ariel Monteverde, Miguel Hugo Acha, Carlos Enrique Vega, Daniel Roberto
author_sort	Garbarino, Gastón Leonel
title	High-pressure effects on the resistivity and ferromagnetic transition of ceramic manganite Ca1-xyxMnO3
title_short	High-pressure effects on the resistivity and ferromagnetic transition of ceramic manganite Ca1-xyxMnO3
title_full	High-pressure effects on the resistivity and ferromagnetic transition of ceramic manganite Ca1-xyxMnO3
title_fullStr	High-pressure effects on the resistivity and ferromagnetic transition of ceramic manganite Ca1-xyxMnO3
title_full_unstemmed	High-pressure effects on the resistivity and ferromagnetic transition of ceramic manganite Ca1-xyxMnO3
title_sort	high-pressure effects on the resistivity and ferromagnetic transition of ceramic manganite ca1-xyxmno3
publishDate	2001
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03048853_v226-230_nPARTI_p843_Garbarino http://hdl.handle.net/20.500.12110/paper_03048853_v226-230_nPARTI_p843_Garbarino
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_version_	1768542037563408384

High-pressure effects on the resistivity and ferromagnetic transition of ceramic manganite Ca1-xyxMnO3

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