Centrosymmetric tetragonal tellurium doped calcium copper titanate and its dielectric tunability

Calcium copper titanate on doping Te4+ at Ti4+ sites transformed structurally to centrosymmetric tetragonal double perovskite. Indeed selected area electron diffraction studies carried out on Te doped ceramics corroborate the refined X-ray diffraction data. The dielectric tunability obtained as a function of applied DC field in Te doped calcium copper titanate ceramics was superior to that of undoped samples.