Get access

Piezoelectric properties of PbHfO3–PbTiO3–Pb(Mg1/3Nb2/3)O3 ternary ceramics

Authors

  • Dawei Wang,

    1. Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA
    2. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P.R. China
    Search for more papers by this author
  • Maosheng Cao,

    Corresponding author
    1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P.R. China
    • School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P.R. China
    Search for more papers by this author
  • Shujun Zhang

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

Abstract

(1 – x)Pb(Hf1–yTiy)O3x Pb(Mg1/3Nb2/3)O3 (x = 0.1 ∼ 0.25, y = 0.555) ternary piezoelectric ceramics were prepared using the two-step precursor method. Morphotropic phase boundary (MPB) compositions, located at x = 0.18 ∼ 0.22, were confirmed using X-ray diffraction and by their dielectric, piezoelectric and ferroelectric properties. The optimum dielectric and piezoelectric properties were achieved for the MPB composition 0.8Pb(Hf0.445Ti0.555)O3–0.2Pb(Mg1/3Nb2/3)O3, with dielectric permittivity εr, piezoelectric coefficient d33, planar electromechanical coupling kp and Curie temperature TC being on the order of 2800, 680 pC/N, 70% and 276 °C, respectively. Of particular significance is that the new ternary ceramics exhibit comparable piezoelectric and electromechanical properties to commercial PZT5H ceramics, but with much improved TC, showing a potential for applications at elevated temperature. (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Ancillary