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Dielectric properties; ferroelectricity

A novel solid solution in the system Bi-W-Cu-O has been synthesized and its structural and dielectric properties studied. The solid solution Bi₂O₃-(1 −x)WO₃-xCuO exists up tox=0·7; the solid solutions up tox=0·65 are orthorhombic but stabilize in tetragonal structure in a narrow range aroundx=0·7. The solid solutions are non-centrosymmetric and exhibit ferroelectric behaviour similar to their parent phase Bi₂WO₆. The Curie point of the solid solution is found to decrease with increase inx.

Vandana Sharma¹ K B R Varma^{1 2} A K Shukla¹

1. Solid State and Structural Chemistry, Indian Institute of Science, Bangalore - 560 012, India
2. Materials Research Centre, Indian Institute of Science, Bangalore - 560 012, India

Published

September 1995

Manuscript received

30 August 1995