Ceramic powder, piezoelectric ceramic, piezoelectric element, and electronic equipment

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United States of America Patent

PATENT NO 9680085
SERIAL NO

14638998

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Abstract

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A ceramic powder contains a metal oxide represented by the following general formula (1). The ceramic powder has a single perovskite-type crystal phase. The ceramic powder is composed of particles having an average equivalent circular diameter in the range of 100 nm or more and less than 1000 nm and has a ratio c1/a1 in the range of 1.000≦c1/a1≦1.010, wherein c1 and a1 denote the c-axis length and a-axis length, respectively, of unit cells of the perovskite-type metal oxide, c1 being greater than or equal to a1.

description='In-line Formulae' end='lead'formula (1)(Ba1-xCax)α(Ti1-y-zZryMnz)O3(0.9900≦α≦1.0100, 0.125≦x≦0.300, 0.020≦y≦0.095, 0.003≦z≦0.016).description='In-line Formulae' end='tail'

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Furuta, Tatsuo Machida, JP 99 409
Shimizu, Yasushi Fujisawa, JP 138 1826
Tanaka, Hidenori Yokohama, JP 116 519
Uebayashi, Akira Tokyo, JP 29 57

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