6- PAC investigations in the Zr-rich región of the PZT phase diagram

R.E. ALONSO, A.P. AYALA, A. LÓPEZ GARCÍA AND J.A. EIRAS

PHYSICA B - CONDENSED MATTER

Año: 2007 vol. 389 p. 107 - 110

0921-4526

whereas PbZrO3 is characterized by a single probes site with a very well-defined hyperfine interaction, in PZT with xX0.1 the probes occupy two distributed sites. In this work, we investigate the Zr-rich region of the PZT phase diagram from x ¼ 0.02 up to x ¼ 0.08 using PAC in order to correlate the hyperfine parameters with the antiferroelectric–ferroelectric phase transition reported to occur at x ¼ 0.05. Two static electric quadrupole interactions, one of them fairly distributed, were detected over the whole Ti concentration range, and an abrupt change in the hyperfine parameters for 0.02oxo0.04 is observed. The behaviour of these parameters and the existence of two probe sites is discussed.3 is characterized by a single probes site with a very well-defined hyperfine interaction, in PZT with xX0.1 the probes occupy two distributed sites. In this work, we investigate the Zr-rich region of the PZT phase diagram from x ¼ 0.02 up to x ¼ 0.08 using PAC in order to correlate the hyperfine parameters with the antiferroelectric–ferroelectric phase transition reported to occur at x ¼ 0.05. Two static electric quadrupole interactions, one of them fairly distributed, were detected over the whole Ti concentration range, and an abrupt change in the hyperfine parameters for 0.02oxo0.04 is observed. The behaviour of these parameters and the existence of two probe sites is discussed.x ¼ 0.02 up to x ¼ 0.08 using PAC in order to correlate the hyperfine parameters with the antiferroelectric–ferroelectric phase transition reported to occur at x ¼ 0.05. Two static electric quadrupole interactions, one of them fairly distributed, were detected over the whole Ti concentration range, and an abrupt change in the hyperfine parameters for 0.02oxo0.04 is observed. The behaviour of these parameters and the existence of two probe sites is discussed.x ¼ 0.05. Two static electric quadrupole interactions, one of them fairly distributed, were detected over the whole Ti concentration range, and an abrupt change in the hyperfine parameters for 0.02oxo0.04 is observed. The behaviour of these parameters and the existence of two probe sites is discussed.oxo0.04 is observed. The behaviour of these parameters and the existence of two probe sites is discussed.