TITLE

Slow relaxation of field-induced piezoelectric resonance in paraelectric barium stannate titanate

AUTHOR(S)
Xiaoyong Wei, Tomasz M.; Yujun Feng, Tomasz M.; Xi Yao
PUB. DATE
March 2004
SOURCE
Applied Physics Letters;3/1/2004, Vol. 84 Issue 9, p1534
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A kind of slow relaxation of field-induced piezoelectric resonance is observed in paraelectric barium stannate titanate ceramics. The piezoelectric resonance peaks vanish in several minutes when bias field is either applied or removed. These phenomena may be universal for dielectrics and can be explained by a model of slow dipoles composed of injected homocharges. With this model, the authors predict a negative piezoelectric modulus of d[sub 33] when just the bias field is removed, and verify it by experimental results. © 2004 American Institute of Physics.
ACCESSION #
12360956

 

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