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Structural distortions and behavioural changes in phase transition of aurivillius type Sr 1-xPb xBi 2Nb 2O 9 ferroelectric
, A.K. Jha, R.G. Mendiratta
Published in
Volume: 323
Pages: 85 - 90
In this paper effects of lead doping on the lattice response and phase transitions of bismuth-layered structure Sr 1-xPb xBi 2Nb 2O 9 (x = 0.0 to 0.5 in steps of 0.1) ferroelectric ceramic are reported. It is observed that structure attains more tetragonality with doping of lead up to 40%. Increased orthorhombic distortion is also observed. Curie temperatures of all samples were measured and the phase transition is explained in terms of lattice response of these ceramics. Sample with x = 0.5 shows decreased tetragonal strain and Curie temperature. Also, relationship of polarization with lattice response is discussed.
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