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Dielectric and piezoelectric properties of (Bi 0.9 Li 0.10 )(Sc 0.90 Ta 0.10 )O 3 PbTiO 3 high‐temperature relaxor piezoelectric ceramics
Author(s) -
Zhao Yi,
Jiang Yihang,
Zhu Jianguo
Publication year - 2010
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200925192
Subject(s) - phase boundary , materials science , dielectric , permittivity , ceramic , perovskite (structure) , analytical chemistry (journal) , ferroelectricity , piezoelectricity , phase (matter) , mineralogy , crystallography , physics , chemistry , optoelectronics , composite material , chromatography , quantum mechanics
(1 − x )(Bi 0.90 Li 0.10 )(Sc 0.90 Ta 0.10 )O 3 x PbTiO 3 (BLSTPT x ; x = 0.60–0.65) ceramics were prepared using the conventional mixed oxide method. X‐ray diffraction analysis revealed that BLSTPT x has a pure perovskite structure. In the vicinity of the morphotropic phase boundary, which was observed in the compositional range 0.61 ≤ x ≤ 0.62 from phase structure measurements, the BLSTPT x ceramics showed enhanced piezoelectric properties: piezoelectric constant d 33 = 516 pC/N, planar electromechanical coupling factors k p = 57%. The temperature of the permittivity maximum increased with increasing measurement frequency, over the range 302–313 °C, higher than that of conventional relaxor materials such as Pb(B 1 B 2 )O 3 PbTiO 3 systems. The ceramics show relaxor ferroelectric features.