title: Complete set of material constants of single domain (K, Na)(Nb, Ta)O3single crystal and their orientation dependence.
abstract: A self-consistent complete set of dielectric, piezoelectric, and elastic constants for single domain Ta modified (K, Na)NbO3(KNN) crystal was determined. This full set constant for single domain KNN-based crystals allowed the prediction of orientation dependence of the longitudinal dielectric, piezoelectric, elastic coefficients, and electromechanical coupling factors. The maximum piezoelectric and electromechanical properties were found to exist near [001]C. In addition, material constants of [001]Cpoled domain engineered single crystal with 4 mm symmetry were experimentally measured and compared with the calculated values. Based on this, extrinsic contribution to the piezoelectricity was estimated to be ∼20%.
authors.affiliation: Condensed Matter Science and Technology Institute, Harbin Institute of Technology , Harbin 150080, China.
authors.forename: Limei
authors.initials: L
authors.lastname: Zheng
authors.affiliation: Department of Instrument Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, China.
authors.forename: Shiyang
authors.initials: S
authors.lastname: Li
authors.affiliation: Condensed Matter Science and Technology Institute, Harbin Institute of Technology , Harbin 150080, China.
authors.forename: Shijing
authors.initials: S
authors.lastname: Sang
authors.affiliation: Condensed Matter Science and Technology Institute, Harbin Institute of Technology , Harbin 150080, China.
authors.forename: Junjun
authors.initials: J
authors.lastname: Wang
authors.affiliation: Condensed Matter Science and Technology Institute, Harbin Institute of Technology , Harbin 150080, China.
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Huo
authors.affiliation: Department of Chemistry, Harbin Institute of Technology , Harbin 150080, China.
authors.forename: Rui
authors.initials: R
authors.lastname: Wang
authors.affiliation: Condensed Matter Science and Technology Institute, Harbin Institute of Technology , Harbin 150080, China.
authors.forename: Zhongyuan
authors.initials: Z
authors.lastname: Yuan
authors.forename: Wenwu
authors.initials: W
authors.lastname: Cao