Impedance spectroscopy study of SrZrO3

R. E. ALONSO; J. DE FRUTOS; M. TAYLOR; M. A. DE LA RUBIA; A. LÓPEZ GARCÍA

Merlo, Argentina

Congreso; AFA 2006; 2006

Recent studies of the phase transitions in SrZrO3 using X-ray and Neutron  Diffraction, together with Perturbed Angular Correlation spectroscopies reveal that the phase diagram of this compound is not simple. The temperatures of the transitions appear to be highly dependent of the thermal history. In this work we present for the first time a study of the phase stability as a function of the annealing using the Impedance Spectroscopy technique. This work will focus on the Pnma -> Imma  (second order) and the Imma -> I4mcm (first order) phase transitions, previously reported at 750º C and 840º C respectively.