acta de conferencia
"Dynamical effects in magnetic and transport properties of phase separated La0.5Ca0.5Mn0.95Fe0.05O3"
L. Granja, E. Indelicato, P. Levy, G. Polla, D.R. Vega and F. Parisi
Proc. of the "5th Latin American Workshop on Magnetism, Magnetic Materials and their Applications" (LAW3M '01), San Carlos de Bariloche, Río Negro, Argentina, September 3-7, 2001. Ed. C.A. Ramos, B. Alascio, M.T. Causa, M. Tovar.
Physica B Condens. Matter. 320(1-4) (2002) 94-96
Abstract
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.
DIVISION MATERIA CONDENSADA
