Chapter 1. Compositional Studies and Electrical Properties of the Leadbased Relaxor Solid Solutions

  1. Waltraud M. Kriven and
  2. Hua-Tay Lin
  1. Chaiyo Kiawong1 and
  2. Aree Thanaboonsombut2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294826.ch1

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4

How to Cite

Kiawong, C. and Thanaboonsombut, A. (2003) Compositional Studies and Electrical Properties of the Leadbased Relaxor Solid Solutions, in 27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4 (eds W. M. Kriven and H.-T. Lin), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294826.ch1

Author Information

  1. 1

    King Mongkut's University of Technology, Thonburi, Bangkok 11000, THAILAND

  2. 2

    National Metal & Materials Technology Center, Pathumthani 12120, THAILAND

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2003

ISBN Information

Print ISBN: 9780470375846

Online ISBN: 9780470294826

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Keywords:

  • ferroelectric;
  • niobate;
  • electrical properties;
  • relaxor systems;
  • pyrochlore

Summary

Lead-based relaxor ceramics are ferroelectric materials exhibiting excellent dielectric and piezoelectric behavior. These materials are used in a wide range of devices such as capacitors, sensors, actuators and transducers. To achieve high performance, the pure perovskite structure must be obtained. However, it is difficult to avoid the presence of a pyrochlore phase that causes degradation of both dielectric and piezoelectric properties. The present work focuses on the influence of various parameters such as the amount of a stabilizer (PbTiO3, PT), calcination and sintering conditions on the stability of perovskite structure and electrical properties. Three systems, PMN-PT, PZN-PT and PNN-PT, prepared by the Columbite precursor method, were investigated. The maximum permittivities at room temperature for PMN, PZN and PNN were obtained in the PMN-PT 95/5, PZN-PT 85/15, and PNN-PT 75/25 compositions, respectively. Meanwhile, the maximum remanent polarizations for PMN, PZN and PNN were obtained in the PMN-PT 65/35, PZN-PT 85/15 and PNN-PT 65/35 compositions.