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Journal of Materials Science

, Volume 45, Issue 1, pp 188–191 | Cite as

Dielectric and piezoelectric properties of (1 − x)(K0.498Na0.498Li0.04)NbO3x(Bi0.5Na0.5)0.9Ba0.1(Zr0.0055Ti0.9945)O3 lead-free ceramics

  • Yixiong Liu
  • Yanqiu HuangEmail author
  • Tiantian Liu
  • Bei Zhang
  • Qiushi Yan
  • Guoxi Zhang
Article

Abstract

(1 − x)(K0.498Na0.498Li0.04)NbO3x(Bi0.5Na0.5)0.9Ba0.1(Zr0.0055Ti0.9945)O3 (KNLN–BNBZT100x, x = 0, 0.01, 0.02, 0.03, 0.05, 0.1) lead-free ceramics were prepared by conventional solid-state reaction technique. The influences of the BNBZT on the crystal structure, dielectric, and piezoelectric properties of the ceramics were investigated. The ceramics formed single-phase solid solutions with perovskite structure after sintering in air at 1050–1100 °C for 3–4 h. Morphotropic phase boundary (MPB) between orthorhombic and tetragonal phase was found in the composition range of 0.01 ≤ x ≤ 0.02. The Curie temperature, Tc, and the orthorhombic–tetragonal transition temperature, TO–T, shifted to low temperature as BNBZT increased. The dielectric and piezoelectric properties of ceramics were enhanced for the composition near the MPB. The maximum value, 194 pC/N, of piezoelectric constant d33 together with the mechanical quality factor Qm, 20, were obtained when BNBZT content was 2 mol%.

Keywords

Piezoelectric Property Morphotropic Phase Boundary Electromechanical Coupling Factor Mechanical Quality Factor Sodium Niobate 

Notes

Acknowledgements

The authors are grateful to Mr. Jishun Yu for XRD analysis and Ms. Michun Yang for assistance in performing the dielectric and piezoelectric property measurements.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Yixiong Liu
    • 1
    • 2
  • Yanqiu Huang
    • 1
    • 2
    Email author
  • Tiantian Liu
    • 1
    • 2
  • Bei Zhang
    • 1
    • 2
  • Qiushi Yan
    • 1
    • 2
  • Guoxi Zhang
    • 1
    • 2
  1. 1.Engineering Research Center of Nano-Geomaterials of Ministry of EducationChina University of GeosciencesWuhanPeople’s Republic of China
  2. 2.Faculty of Materials Science and Chemical EngineeringChina University of GeosciencesWuhanPeople’s Republic of China

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