title: Single-crystal relaxor ferroelectric piezoactuators with interdigitated electrodes.
abstract: We report on the fabrication and performance of (1-x) Pb(Zn(1/3)Nb(2/3))O3-xPbTiO3 (PZN-PT) single-crystal relaxor piezoactuators with interdigitated electrodes patterned on a single surface. An electric field gradient across the sample thickness induces a differential contraction between opposite faces, and it is responsible for the actuation. The samples are poled by energizing the electrodes at 100 degrees C and cooling in a field. Calculations of the piezoelectric response based on a periodically modulated dipolar field yield good agreement with experiment. Discrepancies with the model are ascribed to multidomain formation in the ferroelectric sample as a result of field reversals in the applied electric field along the sample length.
authors.affiliation: Michigan Technological University, Houghton, MI 49931, USA. mlevy@mtu.edu
authors.forename: Miguel
authors.initials: M
authors.lastname: Levy
authors.forename: Raghav
authors.initials: R
authors.lastname: Vanga
authors.forename: Kee S
authors.initials: KS
authors.lastname: Moon
authors.forename: Heung K
authors.initials: HK
authors.lastname: Park
authors.forename: Yong K
authors.initials: YK
authors.lastname: Hong