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  axis. The enhancement is due to the field induced dielectric softening of the crystal. (C) 2004 American Institute of Physics.
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
Cited References Count:22
Record created on 2006-08-21, modified on 2016-08-08