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Structural distortion and phase transition studies of Aurivillius type Sr1-xPbxBi2Nb2O9 ferroelectric ceramics
, A.K. Jha, R.G. Mendiratta
Published in Elsevier Ltd
Volume: 133
Issue: 2
Pages: 125 - 129
In this paper, effects of lead doping on the lattice response and phase transitions of Sr1-xPbxBi2Nb2O 9 (x=0.0-0.5 in steps of 0.1) ferroelectric ceramics are reported. It is observed that structure attains more tetragonality with doping of lead up to 40%. Increased orthorhombic distortion is observed for undoped SEN and 50 at.% lead substituted SBN. Phase transitions for all samples were studied using Curie temperature measurements and are explained in terms of lattice response of these ceramics. Sample with x = 0.5 shows decreased tetragonal strain and Curie temperature. Relationship of polarization with lattice response is discussed. © 2004 Elsevier Ltd. All rights reserved.
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