Incomplete and irreversible high-pressure induced ferroelectric to antiferroelectric phase transition of PZT95/5(2Nb) studied by in-situ neutron diffraction

Avdeev, M; Jorgensen, JD; Short, SM; Morosin, B; Venturini, EL; Yang, P; Samara, GA

Incomplete and irreversible high-pressure induced ferroelectric to antiferroelectric phase transition of PZT95/5(2Nb) studied by in-situ neutron diffraction

Date

2005-11-27

Authors

Publisher

The Bragg Institute, Australian Nuclear Science and Technology Organisation

Abstract

Zr-rich lead zirconate titanate ceramic and powder samples with composition near Pb0.99(Zr0.95Ti0.05)0.98Nb0.02O3 [PZT95/5(2Nb)] have been studied in the range of hydrostatic pressure (0—6.2 kbar) and temperature (10 295 K) by time-of-flight neutron powder diffraction and dielectric measurements. The transformation from the ferroelectric R30 phase FR(LT) to the antiferroelectric Pbam phase is incomplete: even at our highest pressure of 6.2 kbar, §wt.% of the sample remains in the FR(LT) phase. On pressure release to i bar at 295 K, only 26% of the FR(LT) phase is recovered. © The Authors

Description

Physical copy held by ANSTO Library at DDC 539.7217/2

Keywords

Zirconium, Zirconates, Ceramics, Powders, Neutron diffraction, Antiferroelectric materials, Time-of-flight mass spectrometers, Ferroelectric materials, Phase transformations

Citation

Avdeev, M., Jorgensen, J. D., Short, S., Morosin, B., Venturini, E. L., Yang, P., & Samara, G. A. (2005). Incomplete and irreversible high-pressure induced ferroelectric to antiferroelectric phase transition of PZT95/5(2Nb) studied by in-situ neutron diffraction. Paper presented at the Eighth International Conference on Neutron Scattering ICNS 2005: "Neutrons for structure and dynamics - a new era", Sydney Convention & Exhibition Centre, Sydney, Australia, 27 November-2 December 2005. In Final Programme and Abstract Book, (pp. 194).