High-temperature magnetization in Y1-xCaxMnO3

Mostrar todas las versiones(2)

We have studied the T dependence of the susceptibility, χ(T), in the paramagnetic phase of the distorted perovskite series Y1-xCaxMnO3. We have observed different regimes depending on the level of doping. For x∼0 and 1 we found a localized behavior for the eg electrons and a delocalized one for inte...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Tobía, D., Vargas, J., Winkler, E., Vega, D., Leyva, G., Polla, G., Tovar, M., Causa, M.T.
Formato: JOUR
Materias:
Double exchange
Manganite
Paramagnetic susceptibility
Doping (additives)
Electrons
High temperature effects
Magnetic susceptibility
Magnetization
Manganese
Perovskite
Itinerant electrons
Paramagnetic phase
Yttrium
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09214526_v384_n1-2_p41_Tobia
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:We have studied the T dependence of the susceptibility, χ(T), in the paramagnetic phase of the distorted perovskite series Y1-xCaxMnO3. We have observed different regimes depending on the level of doping. For x∼0 and 1 we found a localized behavior for the eg electrons and a delocalized one for intermediate doping (0.2<x≤0.8). For the delocalized regime we present a mean-field description for χ(T) that includes the interaction between localized and itinerant eg electrons. We compare our results with the less distorted series La1-xCaxMnO3. © 2006 Elsevier B.V. All rights reserved.

Ejemplares similares