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Correlation between magnetic and transport properties of phase-separated La0.5Ca0.5MnO3 |
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| Authors: | J. Sacanell P. Levy L. Ghivelder G. Polla F. Parisi |
| Affiliation: | a Departamento de Física, Comisión Nacional de Energía Atómica, Unidad de Actividad Física—entro Atómico Constituyentes, Av. Gral Paz 1499 (1650) San Martín, Buenos Aires, Argentina b Instituto de Física, Universidade Federal do Rio de Janeiro, C.P. 68528, Rio de Janeiro, RJ 21945-970, Brazil |
| Abstract: | The effect of low-magnetic fields on the magnetic and electrical transport properties of polycrystalline samples of the phase-separated compound La0.5Ca0.5MnO3 is studied. The results are interpreted in the framework of the field-induced ferromagnetic fraction enlargement mechanism. A fraction expansion coefficient f, which relates the ferromagnetic fraction f with the applied field H, was obtained. A phenomenological model to understand the enlargement mechanism is worked out. |
| Keywords: | Manganites Phase separation Colossal magnetoresistance |
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