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Ferroelectrics Volume 464, 2014 - Issue 1: Proceedings of the Thirteenth International Meeting on Ferroelectricity (IMF-13)
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Section C: Characterization of Ceramics (continued)

Enhanced Grain Growth in Lead-Free (1−x)(Na0.5Bi0.5)TiO3 – xAgNbO3 Solid Solution Ceramics

J. Y. Y. WongDepartment of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada
,
M. PromsawatDepartment of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada;Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Muang, Chiang Mai50200, Thailand
,
Z. RenDepartment of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada
,
C. LeiDepartment of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada
&
Z.-G. YeDepartment of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, CanadaCorrespondence[email protected]
Pages 122-129 | Received 02 Sep 2013, Accepted 02 Oct 2013, Published online: 01 May 2014
 
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Abstract

The lead-free (1−x)(Na0.5Bi0.5)TiO3 – xAgNbO3 (x = 0.00–0.15) ceramics were synthesized by solid state reaction. Anomaly large grain growth was observed by scanning electron microscopy with an average grain size reaching 90 μm for x = 0.02. The incorporation of AgNbO3 into (Na0.5Bi0.5)TiO3 led to highly dense ceramics without the addition of binder or sintering aid. The ceramics are slightly deficient in bismuth on the surface, which caused the formation of Na2Ti6O13 whiskers. These whiskers can be removed by polishing for subsequent piezoelectric and ferroelectric characterizations.

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