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IJEMS Vol.15(2) [April 2008] >


Title: Structural and dielectric investigations on BST-BZT composites
Authors: Kulkarni, S B
Veer, S S
Salunkhe, D J.
Kokare, S R
Joshi, P B
Keywords: BST
BZT
Composites
Hydroxide co-precipitation
Dielectric properties
Issue Date: Apr-2008
Publisher: CSIR
Abstract: Nanopowders of Ba₀․₈Sr₀․₂TiO₃ (BST) and BaZr₀․₃Ti₀․₇O₃ (BZT) are synthesized using hydroxide co-precipitation method. The nanoparticles are used to form composites z BST + (1-z) BZT for z = 0.4, 0.5 and 0.6 with 2 wt% Bi₂O₃ as a sintering aid. The powders of BST, BZT and composites are subjected to the investigations of XRD, complex impedance and dielectric properties. The results on variation of dielectric constant with temperature and frequency are promising and suggest usefulness of composites as a RF dielectric material, in the paraelectric region.
Page(s): 116-120
ISSN: 0971-4588
Source:IJEMS Vol.15(2) [April 2008]

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