Correlation between magnetic and transport properties of phase-separated La0.5Ca0.5MnO3

J.SACANELL , P.LEVY, L.GHIVELDER , G.POLLA , F.PARISI

PHYSICA B - CONDENSED MATTER

ELSEVIER SCIENCE BV

Lugar: New York; Año: 2002 vol. 320 p. 90 - 93

0921-4526

AbstractThe 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 af ; which relates the ferromagneticfraction f with the applied field H; was obtained.A phenomenological model to understand the enlargement mechanism is worked out. r 2002 Elsevier Science B.V. All rights reserved.Keywords: Manganites; Phase separation; Colossal magnetoresistance