Properties of tungsten-doped Bi{sub 4}Ti{sub 3}O{sub 12}-SrBi{sub 4}Ti{sub 4}O{sub 15} intergrowth ferroelectrics
- College of Physics Science and Technology, Yangzhou University, Yangzhou 225002 (China)
- National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008 (China)
Ferroelectric and dielectric properties of tungsten-doped Bi{sub 4}Ti{sub 3}O{sub 12}-SrBi{sub 4}Ti{sub 4}O{sub 15} ceramics were investigated. A pure phase of all the samples is confirmed by X-ray diffraction patterns. The remanent polarization (2P {sub r}) of the samples increases initially and reaches its maximum value of 43.2 {mu}C/cm{sup 2} when W content is 0.03, which is over twice as large as that of non-doped one, then decreases with further doping. The coercive field (E {sub c}) shows a weak tungsten content dependency. It is considered that the enlarged 2P {sub r} could be mainly attributed to the restraint of oxygen vacancies as well as the weakening of their mobility. The Curie temperature decreases a little with increasing doping content, which indicates the good thermal stability is not deteriorated by tungsten doping.
- OSTI ID:
- 21000588
- Journal Information:
- Materials Research Bulletin, Vol. 42, Issue 2; Other Information: DOI: 10.1016/j.materresbull.2006.06.003; PII: S0025-5408(06)00243-1; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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