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Modified Pb(Mg 1/3 Nb 2/3 )O 3 ‐PbZrO 3 –PbTiO 3 ceramics with high piezoelectricity and temperature stability
Author(s) -
Wang Pengbin,
Guo Qinghu,
Li Fei,
Xia Fangquan,
Hao Hua,
Sun Huajun,
Liu Hanxing,
Zhang Shujun
Publication year - 2021
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/jace.17741
Subject(s) - curie temperature , phase boundary , piezoelectricity , materials science , piezoelectric coefficient , ceramic , tetragonal crystal system , dielectric , electromechanical coupling coefficient , ferroelectricity , atmospheric temperature range , mineralogy , temperature coefficient , analytical chemistry (journal) , phase (matter) , condensed matter physics , crystallography , composite material , crystal structure , thermodynamics , optoelectronics , chemistry , ferromagnetism , physics , organic chemistry , chromatography
There is a great demand to develop ferroelectric ceramics with both high piezoelectric coefficient and broad temperature usage range for emerging electromechanical applications. Herein, a series of Sm 3+ ‐doped 0.25Pb(Mg 1/3 Nb 2/3 )O 3 ‐(0.75− x )PbZrO 3 ‐ x PbTiO 3 ceramics were fabricated by solid‐state reaction method. The phase structure, dielectric and piezoelectric properties were investigated, where the optimum piezoelectric coefficient d 33 = 745 pC/N and electromechanical coupling factor k 33 = 0.79 were obtained at the morphotropic phase boundary composition x = 0.39, with good Curie temperature T C of 242°C. Of particular importance is that high‐temperature stability of the piezoelectric and field‐induced strain was obtained over the temperature range up to 230°C for the tetragonal compositions of x = 0.40. The underlying mechanism responsible for the high piezoelectricity and temperature stability is the synergistic contribution of the MPB and local structural heterogeneity, providing a good paradigm for the design of high‐performance piezoelectric materials to meet the challenge of piezoelectric applications at elevated temperature.