Dependence of the electrophysical properties and crystal structure of Ca1 − xYxTiSi1 − xFexO5 solid solutions on their composition

The results of the electrophysical and X-ray diffraction studies of the pseudobinary system CaTiSiO 5 -YFeTiO 5 are given. All the synthesized Ca 1 − x Y x TiSi 1 − x Fe x O 5 solid solutions (0 ⩽ x ⩽ 1) were found to be semiconductors. The replacement of Ca and Si atoms by Y and Fe atoms led to a significant change in the electric conductivity, dielectric permittivity, forbidden gap, and molar polarization; a complete replacement of Ca and Si atoms led to growth of electric conductivity of the samples by four orders of magnitude. At 1170 K, the CaTiSiO 5 -YFeTiO 5 system was found to consist of two homogeneous phases with wide homogeneity regions: the α phase samples were diamagnets, and the β phase samples were ferromagnets. The crystallographic parameters of the synthesized solid solutions were also determined.