Journal
APPLIED PHYSICS LETTERS
Volume 100, Issue 19, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4714703
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- FNS PNR62 [406240-126091]
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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]
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