title: Growth and properties of Li, Ta modified (K,Na)NbO3lead-free piezoelectric single crystals.
abstract: Li, Ta modified (K,Na)NbO3single crystals with the size of 18 mm × 18 mm × 10 mm were successfully grown by top-seeded solution growth method, with orthorhombic-tetragonal phase transition temperature ~79 °C and Curie temperature ~276 °C. The electromechanical coupling factorsk33andktwere found to be ~88% and ~65%, respectively. The piezoelectric coefficientd33for the [001]cpoled crystals reached 255 pC/N. In addition, the electromechanical coupling factor exhibited high stability over the temperature range of -50 °C to 70 °C, making these lead free crystals good candidates for electromechanical applications.
authors.affiliation: Harbin Institute of Technology, Condensed Matter Science and Technology Institute, Harbin 150080, P.R. China ; Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Huo
authors.affiliation: Harbin Institute of Technology, Condensed Matter Science and Technology Institute, Harbin 150080, P.R. China.
authors.forename: Limei
authors.initials: L
authors.lastname: Zheng
authors.affiliation: Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
authors.forename: Shujun
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Harbin Institute of Technology, Condensed Matter Science and Technology Institute, Harbin 150080, P.R. China.
authors.forename: Rui
authors.initials: R
authors.lastname: Zhang
authors.affiliation: Harbin Institute of Technology, Condensed Matter Science and Technology Institute, Harbin 150080, P.R. China ; Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
authors.forename: Gang
authors.initials: G
authors.lastname: Liu
authors.affiliation: Department of Chemistry, Harbin Institute of Technology, Harbin 150001, P.R. China.
authors.forename: Rui
authors.initials: R
authors.lastname: Wang
authors.affiliation: Harbin Institute of Technology, Condensed Matter Science and Technology Institute, Harbin 150080, P.R. China.
authors.forename: Bin
authors.initials: B
authors.lastname: Yang
authors.affiliation: Harbin Institute of Technology, Condensed Matter Science and Technology Institute, Harbin 150080, P.R. China ; Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
authors.forename: Wenwu
authors.initials: W
authors.lastname: Cao
authors.affiliation: Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
authors.forename: Thomas R
authors.initials: TR
authors.lastname: Shrout
keywords: KNN single crystals; electromechanical coupling factor; lead-free; thermal stability