| Revista: | Momento |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000407501 |
| ISSN: | 0121-4470 |
| Autores: | Olarte, J.A1 Mariño, A2 |
| Instituciones: | 1Universidad Distrital "Francisco José de Caldas", Facultad Tecnológica, Bogotá. Colombia 2Universidad Nacional de Colombia, Departamento de Física, Bogotá. Colombia |
| Año: | 2008 |
| Periodo: | Jun |
| Número: | 36 |
| Paginación: | 18-25 |
| País: | Colombia |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, descriptivo |
| Resumen en inglés | 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 |
| Disciplinas: | Física y astronomía, Ingeniería |
| Palabras clave: | Física, Física de materia condensada, Ingeniería de materiales, Manganitas, Resonancia paramagnética electrónica, Estado sólido |
| Keyword: | Physics and astronomy, Engineering, Condensed matter physics, Physics, Materials engineering, Manganites, Electron paramagnetic resonance, Solid state |
| Texto completo: | Texto completo (Ver HTML) |
