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Title: Electrical properties of ferroelectric Sr(0.5)Ba(0.5)Nb(2)O(6) ceramic materials synthesized by different techniques
Authors: KULKARNI, AR
PATRO, PK
GUPTA, SM
HARENDRANATH, CS
Keywords: strontium-barium-niobate
research-and-development
dielectric-properties
microstructure
coprecipitation
japan
us
Issue Date: 2008
Publisher: IEEE
Citation: 2008 17TH IEEE INTERNATIONAL SYMPOSIUM ON THE APPLICATIONS OF FERROELECTRICS,23-26
Abstract: Strontium Barium Niobate (Sr(x)Ba(1-x)Nb(2)O(6), abbreviated as SBN) is a promising lead free ferroelectric-ceramic material. It belongs to the family of tetragonal tungsten bronze structured ferroelectrics. Unlike other family of ferroelectric perovskites such as, PMN and BT where, only one composition gives the ferroelectric phase, SBN exhibits ferroelectricity in the composition range 0.25 <= x <= 0.75. This in turn, results in a material with different Curie temperatures, microstructures, dielectric and ferroelectric properties. However, the unusual sintering behavior of SBN, leading to abnormal grain growth, duplex microstructure and low density, has plagued commercial exploitation of SBN. We have employed several synthesis methods for example solid-state (conventional as well as microwave sintered), partial coprecipitation and coprecipitation to synthesize SBN of one specific composition (Sr(0.5)Ba(0.5)Nb(2)O(6)). The different methods resulted in materials having varying microstructure and dielectric properties. For practical application of a ferroelectric material, the ferroelectric properties stand above all other properties due to its wide possible applications in memory and actuators. The main thrust of this paper is on how the ferroelectric properties e.g. Hysteresis, I-V characteristics, Leakage test and Electrical fatigue behavior vary with different synthesis approaches and the consequent microstructure.
URI: http://dspace.library.iitb.ac.in/xmlui/handle/10054/16427
http://hdl.handle.net/100/2918
ISBN: 978-1-4244-2744-4
ISSN: 1099-4734
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