Epr and magnetic properties on lacamno manganites
Electron paramagnetic resonance (EPR) and AC Susceptibility measurements were carried out as a function of temperature on La0,7Ca0,3MnO3 polycrystalline samples. The samples displayed a transition from paramagnetic-insulator to ferromagnetic-metal at Tc around 261K. Tc was determined from the invers...
- Autores:
-
Olarte, J. A.
Mariño, A.
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2008
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/73593
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/73593
http://bdigital.unal.edu.co/38069/
- Palabra clave:
- LaCaMnO manganites
EPR
a.c. susceptibility.
LaCaMnO manganites
EPR
a.c. susceptibility.
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
| Summary: | Electron paramagnetic resonance (EPR) and AC Susceptibility measurements were carried out as a function of temperature on La0,7Ca0,3MnO3 polycrystalline samples. The samples displayed a transition from paramagnetic-insulator to ferromagnetic-metal at Tc around 261K. Tc was determined from the inverse of the real part of a.c. susceptibility (1/X’) vs temperature, which follows a simple Curie-Weiss behavior. The inverse of the EPR intensity also follows a Curie-Weiss type behavior down toTEPR = 253 K.. The structure of the samples as determined by X-Ray diffraction (XRD) corresponds to a single perovskite phase with orthorhombic unit cell. |
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