Journal
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
Volume 127, Issue 6, Pages 369-373Publisher
CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI
DOI: 10.2109/jcersj2.19010
Keywords
BF-based piezoelectric ceramics; A-site off-stoichiometry; Defect dipole
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Mn-added 0.3BaTiO(3)-0.1Bi(x)(Mg1/2Ti1/2)O-3-0.6BiFeO(3) (x = 0.93, 0.96, 1.00, 1.04, 1.07, and 1.10) ceramics were fabricated by conventional solid-state reaction. The crystal systems of all the ceramics were pseudo-cubic, and no secondary phase was observed. It was found that the ceramics with x = 1.00 exhibited an optimum piezoelectric property of d(33) = 106.16 pC/N, while the Bi-deficient and excess ceramics lowered the piezoelectric properties to 81.09 and 102.29 pC/N, respectively. The reason of the decreases could be associated with domain wall pinning effects by defect complexes and the presence of the residual small amount of Bi2O3. (C)2019 The Ceramic Society of Japan. All rights reserved.
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