Premium
Temperature Stability in Dy ‐Doped ( Ba 0.99 Ca 0.01 )( Ti 0.98 Zr 0.02 ) O 3 Lead‐Free Ceramics with High Piezoelectric Coefficient
Author(s) -
Li Wei,
Xu Zhijun,
Chu Ruiqing,
Fu Peng,
Zang Guozhong
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04744.x
Subject(s) - tetragonal crystal system , materials science , doping , curie temperature , ceramic , atmospheric temperature range , phase (matter) , analytical chemistry (journal) , mineralogy , crystallography , chemistry , condensed matter physics , thermodynamics , composite material , physics , crystal structure , ferromagnetism , chromatography , optoelectronics , organic chemistry
We report on excellent temperature stability of the Dy ‐doped ( Ba 0.99 Ca 0.01 )( Ti 0.98 Zr 0.02 ) O 3 ( BCZT‐D ) ceramics with high piezoelectric coefficient of d 33 = 366 pC/N and planar electromechanical coupling factor of k p = 43.0%. Meanwhile, Curie temperature of the BCZT‐D ceramics is found to be 125°C. Greatly improved temperature stability of the electromechanical coupling coefficients is found over a common usage temperature range between 20°C and 100°C, in which the BCZT‐D ceramics exhibit pure tetragonal phase. The results indicate that the BCZT‐D ceramics are promising lead‐free materials for practical applications.