Anomalous magnetic behavior of BaTiO3 and La0.7Ca0.3MnO3 composite system

We report dc magnetization study of a composite made of well known ferroelectric material BaTiO3 (BTO) and a colossal magnetoresistance material (CMR) La0.7Ca0.3MnO3(LCMO). The phase purity of the parent compounds and the composite are confirmed from Rietveld refinement of the XRD pattern. The insignificant change of the spin state of the composite with respect to parent ingredient has been confirmed from same values of Curie constant (C) and Curie Weiss temperature (θC). A significant reduction of the magnetic moment of the composite below Curie temperature is explained in terms of magnetoelectric coupling induced magnetic anisotropy inside LCMO present in the composite and this magnetic anisotropy is observed to be wakened at lower temperature.