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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_03048853_v226-230_nPARTI_p843_Garbarino |
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todo:paper_03048853_v226-230_nPARTI_p843_Garbarino2023-10-03T15:21:05Z High-pressure effects on the resistivity and ferromagnetic transition of ceramic manganite Ca1-xyxMnO3 Garbarino, G. Parón, S. Monteverde, M. Acha, C. Leyva, G. Vega, D. Polla, G. Briático, J. Alascio, B. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03048853_v226-230_nPARTI_p843_Garbarino |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
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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, G. Parón, S. Monteverde, M. Acha, C. Leyva, G. Vega, D. Polla, G. Briático, J. Alascio, B. 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. |
| format |
JOUR |
| author |
Garbarino, G. Parón, S. Monteverde, M. Acha, C. Leyva, G. Vega, D. Polla, G. Briático, J. Alascio, B. |
| author_facet |
Garbarino, G. Parón, S. Monteverde, M. Acha, C. Leyva, G. Vega, D. Polla, G. Briático, J. Alascio, B. |
| author_sort |
Garbarino, G. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_03048853_v226-230_nPARTI_p843_Garbarino |
| work_keys_str_mv |
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1807320130600828928 |