Dynamical effects in magnetic and transport properties of phase separated La0.5Ca0.5Mn0.95Fe0.05O3

L. GRANJA; E. INDELICATO; P. LEVY; G. POLLA; D. VEGA; F. PARISI

PHYSICA B - CONDENSED MATTER

Año: 2002 vol. 320 p. 94 - 96

0921-4526

We have measured transport and magnetic properties of polycrystalline La0.5Ca0.5Mn0.95Fe0.05O3, a phase separated manganite with ferromagnetic ground state. Cooling rate dependences and time relaxation were found; the coexistence of ferromagnetic and charge ordered regions determines a dynamics which influences physical properties. We show that a dynamical contribution to the resistivity can account for the observed cooling rate dependence and ageing effects on this phase separated manganite.