Piezoelectric device

There is disclosed a piezoelectric device which has a remarkably high piezoelectric characteristic and which is superior in a vibration transmitting property between a substrate and a piezoelectric portion and in which linearity of a flexural displacement with respect to a voltage is high up to a hi...

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Bibliographic Details
Main Authors KITAGAWA, MUTSUMI, SHIMIZU, HIDEKI, EBIGASE, TAKASHI, KASHIWAYA, TOSHIKATSU
Format Patent
LanguageEnglish
French
German
Published 26.07.2006
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
GENERATION
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:There is disclosed a piezoelectric device which has a remarkably high piezoelectric characteristic and which is superior in a vibration transmitting property between a substrate and a piezoelectric portion and in which linearity of a flexural displacement with respect to a voltage is high up to a high voltage region and which exhibits a high durability even in a case where the device is used with a large flexural displacement for a long period. The piezoelectric device is provided with: a substrate 2 made of a ceramic; a piezoelectric portion 1 constituted of a piezoelectric porcelain composition containing as a major component a Pb(Mg, Ni) 1/3 Nb 2/3 O 3 -PbZrO 3- PbTiO 3 ternary solid solution system composition represented by a predetermined formula; and an electrode 3 electrically connected to the piezoelectric portion 1, and the piezoelectric portion 1 is solidly attached onto the substrate 2 directly or via the electrode 3.
Bibliography:Application Number: EP20060250281