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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/6156

Title: Microstructure and dielectric properties of strontium barium niobate ceramics synthesized by partial coprecipitation
Authors: PATRO, PK
KULKARNI, AR
HARENDRANATH, CS
Keywords: low-temperature preparation
photorefractive properties
ferroelectric properties
powders
Issue Date: 2003
Publisher: ELSEVIER SCI LTD
Citation: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 23(8), 1329-1335
Abstract: Strontium Barium Niobate, Sr0.5Ba0.5Nb2O6 (SBN50), has been synthesized, for the first time, by partial coprecipitation of SrCl2 and BaCl2 on Nb2O5. Powder X-ray diffraction study shows tetragonal tungsten bronze phase formation at 1200 degreesC. Particle morphology and size of calcined powder has been examined using Transmission Electron Microscopy. The particle size of calcined powder ranges between 250 and 300 nm. The green compacts have been sintered at 1250, 1300 and 1350 degreesC and at each temperature for 6, 12 and 24 h, respectively. Effect of sintering time and temperature on dielectric properties has been investigated. Scanning electron microscopy has been used for grain morphology studies. Grains have been found to be tetragonal in shape and show variation in size for different sintering conditions. Highest dielectric constant (epsilon) has been observed for the pellet sintered at 1350 degreesC for 6 h. A variation in T, from 93 to 119 degreesC has also been observed. (C) 2002 .
URI: http://dx.doi.org/10.1016/S0955-2219(02)00293-5
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6156
http://hdl.handle.net/10054/6156
ISSN: 0955-2219
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