Kps. Anil et al., EFFECT OF COMPOSITIONAL HOMOGENEITY ON THE MAGNETIC-PROPERTIES OF LA0.7CA0.3MNO3, Journal of materials chemistry, 8(5), 1998, pp. 1219-1223
Dc magnetization and ac magnetic susceptibility have been measured in
the temperature range 80-300 K for La0.7Ca0.3MnO3, synthesized by the
conventional ceramic and the low temperature combustion methods and an
nealed at different temperatures. Temperature dependence of the de mag
netization and the ac susceptibility is strongly dependent on the proc
essing conditions resulting in compositional inhomogeneity in the samp
les. A sharp ferromagnetic transition is observed only for a compositi
onally homogeneous sample.