Charge transfer in the Ca(1-x)Sr(x)HfO(3)

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

FERROELECTRICS

Taylor & Francis

Año: 2008 vol. 363 p. 50 - 55

0015-0193

Abstract Mixed perovskites Ca1-xSrxHfO3 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. Mixed perovskites Ca1-xSrxHfO3 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.