Charge transfer in the Ca1-xSrxHfO3 system.

A. LÓPEZ-GARCÍA; R.E. ALONSO; M. FALABELLA; G. ECHEVERRÍA

FERROELECTRICS

Taylor & Francis Group

Año: 2008 p. 1 - 6

0015-0193

Mixed perovskites Ca1−x Srx HfO3 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 181Hf-181Ta 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.