TITLE

Large enhancement of the piezoelectric response in perovskite crystals by electric bias field antiparallel to polarization

AUTHOR(S)
Budimir, Marko; Damjanovic, Dragan; Setter, Nava
PUB. DATE
October 2004
SOURCE
Applied Physics Letters;10/4/2004, Vol. 85 Issue 14, p2890
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Using Landau–Ginzburg–Devonshire theory and tetragonal BaTiO3 as an example, this letter demonstrates that strong electric bias fields applied antiparallel to spontaneous polarization may lead to a large enhancement of piezoelectric properties in monodomain perovskite crystals with multiple phase transitions. At temperatures close to tetragonal–orthorhombic phase transition, the largest enhancement is approximately along the [111] axis. The enhancement is due to the field induced dielectric softening of the crystal.
ACCESSION #
14713350

 

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