Elastic, dielectric, and piezoelectric anomalies and Raman spectroscopy of 0.5Ba(Ti0.8Zr0.2)O3-0.5(Ba0.7Ca0.3)TiO3

• Published in: Applied Physics Letters (ISSN: 0003-6951), vol. 100, num. 19, p. 192907
• American Institute of Physics, 2012

The solid solution 0.5Ba(Ti0.8Zr0.2)O-3-0.5(Ba0.7Ca0.3)TiO3 (BCZT) is a promising lead-free piezoelectric material with exceptionally high piezoelectric coefficients. The strong response is related to structural instabilities close to ambient temperature. We report here on temperature-induced anomalies in the dielectric, piezoelectric, and elastic coefficients and Raman spectroscopy of ceramic BCZT. The data indicate ferroelectric-ferroelectric structural phase transitions in this material in addition to those previously reported. An anomaly is also observed above the Curie temperature T-C and is associated with the loss of polar structure that persists thirty degrees above T-C. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4714703]

Keywords: Barium-Titanate ; Single-Crystals ; Ceramics ; Motion

Reference

• EPFL-ARTICLE-176962
• doi:10.1063/1.4714703
• View record in Web of Science

Record created on 2012-05-10, modified on 2017-05-10