NBT-BT crystal piezoelectric film and piezoelectric stacking structure comprising the same

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United States of America Patent

PATENT NO 9482688
APP PUB NO 20150243878A1
SERIAL NO

14322780

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Abstract

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The present invention provides an NBT-BT film having a higher polarization-disappearance temperature. The present invention is a [(Na,Bi)1-xBax]TiO3 crystal piezoelectric film. The [(Na,Bi)1-xBax]TiO3 crystal piezoelectric film has a (001) orientation only. The [(Na,Bi)1-xBax]TiO3 crystal piezoelectric film has a-axis length of not less than 0.390 nanometers and not more than 0.395 nanometers. The [(Na,Bi)1-xBax]TiO3 crystal piezoelectric film has c-axis length of not less than 0.399 nanometers and not more than 0.423 nanometers (where x represents a value of not less than 0 and not more than 1). The [(Na,Bi)1-xBax]TiO3 crystal piezoelectric film has a polarization-disappearance temperature of not less than 389 degrees Celsius.

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Patent Owner(s)

Patent OwnerAddress
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTDJAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Adachi, Hideaki Osaka, JP 93 861
Fujii, Eiji Osaka, JP 126 1366
Harigai, Takakiyo Osaka, JP 29 169
Hashimoto, Kazuya Osaka, JP 83 374
Tanaka, Yoshiaki Nara, JP 382 4481

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