Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
Feature: Cutting edge research on electroceramics 2018: Full papers
Effect of A-site off-stoichiometry on ferroelectric and piezoelectric properties of BaTiO3–Bi(Mg1/2Ti1/2)O3–BiFeO3 ceramics
Hyunwook NAMIchiro FUJIISangwook KIMTomoya AIZAWAShintaro UENOSatoshi WADA
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2019 Volume 127 Issue 6 Pages 369-373


Mn-added 0.3BaTiO3–0.1Bix(Mg1/2Ti1/2)O3–0.6BiFeO3 (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 d33 = 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.

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