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

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. (C) 2004 American Institute of Physics.


Published in:
Applied Physics Letters, 85, 14, 2890-2892
Year:
2004
ISSN:
0003-6951
Keywords:
Note:
Damjanovic, D Swiss Fed Inst Technol, EPFL, Mat Inst, Ceram Lab, CH-1015 Lausanne, Switzerland Swiss Fed Inst Technol, EPFL, Mat Inst, Ceram Lab, CH-1015 Lausanne, Switzerland
863FV
Times Cited:4
Cited References Count:22
Other identifiers:
Laboratories:




 Record created 2006-08-21, last modified 2018-03-17


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