Piezoelectric material, piezoelectric element, multilayered piezoelectric element, liquid ejection head, liquid ejection apparatus, ultrasonic motor, optical equipment, vibration apparatus, dust removing apparatus, imaging apparatus, and electronic equipment

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United States of America Patent

PATENT NO 9343650
APP PUB NO 20140292160A1
SERIAL NO

14217725

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Abstract

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Provided is a lead-free piezoelectric material having a satisfactory and stable piezoelectric constant and electric insulation property in a wide practical temperature range. Provided is a piezoelectric material, including a perovskite-type metal oxide represented by the following general formula (1) as a main component, the piezoelectric material containing Mn in a content of 0.01 part by weight or more and 0.80 part by weight or less with respect to 100 parts by weight of the perovskite-type metal oxide: (LiαxNaαyKαzBaβBi0.5α+γ)a(Tiα+βFeγ) O3 . . . (1), where 0.800≦α≦0.999, 0≦β≦0.150, 0.001≦γ≦0.050, α+β+γ=1, 0≦x≦0.050, 0.045≦y≦0.450, 0.045≦z≦0.450, 0.450≦x+y+z≦0.500, and 0.980≦a≦1.020.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA;FUJI CHEMICAL INDUSTRY CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hayashi, Jumpei Yokohama, JP 65 375
Kubota, Makoto Yokohama, JP 217 2822
Maeda, Kenji Hirakata, JP 278 3168
Shimizu, Chiemi Hirakata, JP 18 104
Uchida, Fumio Daito, JP 30 182

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