Journal of Inorganic Materials ›› 2014, Vol. 29 ›› Issue (1): 28-32.DOI: 10.3724/SP.J.1077.2014.12717

• Research Paper • Previous Articles     Next Articles

Effect of Sn Content on the Phase Structure and Electrical Properties of PbSnO3-Pb(Mg1/3Nb2/3)O3-PbTiO3 Ternary Ceramics

WANG Da-Wei1, 2, 3, ZHAO Quan-Liang1, CAO Mao-Sheng2, CUI Yan1, ZHANG Shu-Jun3   

  1. (1. College of Mechanical and Electrical Engineering, North China University of Technology, Beijing 100144, China; 2. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; 3. Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA)
  • Received:2012-11-29 Revised:2013-03-07 Published:2014-01-20 Online:2013-12-09
  • Supported by:

    National Natural Science Foundation of China (50742007, 50972014, 51132002); National High-Technology Research and Development Program of China (2007AA03Z103); Key Laboratory Foundation of Sonar Technology of China (914C24KF0901)

Abstract: PbSnO3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PSn-PMN-PT) ternary ceramics were successfully prepared by two-step columbite precursor method. The effects of Sn content on the phase structure and electrical properties of PSn-PMN-PT were investigated. X-ray powder diffraction (XRD) results indicated that all studied PSn-PMN-PT compositions located around the morphotropic phase boundary (MPB), with rhombohedral and tetragonal phases coexisted. With the decrease of Sn content, no change was observed in the XRD patterns of PSn-PMN-PT, while pyrochlore phase presented with excess Sn. The piezoelectric, dielectric and ferroelectric properties of PSn-PMN-PT were found to be improved with deficient Sn and deteriorate with increasing Sn content. In particular, the optimum piezoelectric and ferroelectric properties were achieved for PSn-PMN-PT ceramics with 0.2mol% deficient Sn, i.e. d33=~530 pC/N, kp=~56.4%, Qm=~570, εr=~3070, tanδ=~0.3%, Pr=~28.9 μC/cm2 and EC=~8 kV/cm.

Key words: piezoelectric ceramics, PbSnO3-Pb(Mg1/3Nb2/3)O3-PbTiO3, piezoelectric property, morphotropic phase boundary

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