Get access

Growth and properties of Li, Ta modified (K,Na)NbO3 lead-free piezoelectric single crystals

Authors

  • Xiaoqing Huo,

    1. Harbin Institute of Technology, Condensed Matter Science and Technology Institute, Harbin 150080, P.R. China
    2. Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
    Search for more papers by this author
  • Limei Zheng,

    1. Harbin Institute of Technology, Condensed Matter Science and Technology Institute, Harbin 150080, P.R. China
    Search for more papers by this author
  • Shujun Zhang,

    Corresponding author
    1. Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
    • Phone: +001 814 863 2639, Fax: +001 814 865 7173

    Search for more papers by this author
  • Rui Zhang,

    1. Harbin Institute of Technology, Condensed Matter Science and Technology Institute, Harbin 150080, P.R. China
    Search for more papers by this author
    • Phone: +86 451 86402797, Fax: +86 451 86402797

  • Gang Liu,

    1. Harbin Institute of Technology, Condensed Matter Science and Technology Institute, Harbin 150080, P.R. China
    2. Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
    Search for more papers by this author
  • Rui Wang,

    1. Department of Chemistry, Harbin Institute of Technology, Harbin 150001, P.R. China
    Search for more papers by this author
  • Bin Yang,

    1. Harbin Institute of Technology, Condensed Matter Science and Technology Institute, Harbin 150080, P.R. China
    Search for more papers by this author
  • Wenwu Cao,

    1. Harbin Institute of Technology, Condensed Matter Science and Technology Institute, Harbin 150080, P.R. China
    2. Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
    Search for more papers by this author
  • Thomas R. Shrout

    1. Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
    Search for more papers by this author

Abstract

Li, Ta modified (K,Na)NbO3 single crystals with the size of 18 mm × 18 mm × 10 mm were successfully grown by top-seeded solution growth method, with orthorhombic–tetra-gonal phase transition temperature ∼79 °C and Curie temperature ∼276 °C. The electromechanical coupling factors k33 and kt were found to be ∼88% and ∼65%, respectively. The piezoelectric coefficient d33 for the [001]c poled 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. (© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Get access to the full text of this article

Ancillary