Charge Transfer in the Ca1-xSrx HfO3 System

Abstract

Mixed perovskites Ca1− x Sr x HfO 3 with x ≅ 0.25, 0.50 and 0.75 have been prepared for the first time by the high temperature solid state reaction method. The crystalline structures of these perovskites were investigated by X-Ray Diffraction (XRD) technique. The samples were irradiated with thermal neutrons to produce the 181 Hf- 181 Ta Perturbed Angular Correlation spectroscopy (PACs) probe. A static asymmetric and disordered electric field gradient interaction was used to fit the time spectra. The behaviour of the quadrupole frequency measured at room temperature with composition is discussed.