Pyroelectric ceramic composition and multilayered structure ther

Details Pyroelectric ceramic composition and multilayered structure ther Pyroelectric ceramic composition and multilayered structure ther

1990-07-12

1991-07-16

Bell, Mark L.

Stock material or miscellaneous articles

Composite

Of inorganic material

428701, 501134, B32B 900

Patent

active

050324713

ABSTRACT:
A pyroelectric ceramic composition of the general formula: PbZr.sub.X (Zn.sub.1/3 Nb.sub.2/3).sub.Y Ti.sub.Z O.sub.3 wherein X+Y+Z=1 is provided having both of high pyroelectric constant and the second transition temperature below its Curie's temperature. Further, there is provided a multilayered pyroelectric structure comprising a stack of a plurality of layers, each of which has the different composition each to other, of the general formula: PbZr.sub.X (Zn.sub.1/3 Nb.sub.2/3).sub.Y Ti.sub.Z O.sub.3 wherein X+Y+Z=1, where the value of Z is different from each other in the different layers.

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