TITLE

Importance of random fields on the properties and ferroelectric phase stability of <001> oriented 0.7 Pb(Mg[sub 1/3]Nb[sub 2/3])O[sub 3]-0.3 PbTiO[sub 3] crystals

AUTHOR(S)
Viehland, D.; Powers, J.; Cross, L. E.; Li, J. F.
PUB. DATE
May 2001
SOURCE
Applied Physics Letters;5/28/2001, Vol. 78 Issue 22, p3508
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Temperature dependent dielectric constant measurements have been performed on <001> oriented 0.7 Pb(Mg[sub 1/3]Nb[sub 2/3])O[sub 3]-0.3 PbTiO[sub 3] crystals. These investigations have revealed an irreversible secondary transformation between a normal ferroelectric state and a relaxor ferroelectric state with increasing temperature. The results demonstrate that the anisotropy of the high performance piezocrystal state is only metastably locked in under application of field. Clearly, local random fields play a crucial role upon the ferroelectric phase stability and properties of <001> oriented piezocrystals. © 2001 American Institute of Physics.
ACCESSION #
4711219

 

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