Effect of gamma ray irradiation on the ferroelectric and piezoelectric properties of barium stannate titanate ceramics.

Abstract: Tin doped barium titanate ceramics has been obtained by solid state reaction method followed by high energy ball milling. The effect of heavy dose gamma ray irradiation on the ferroelectric and piezoelectric properties of the synthesized barium stannate titanate ceramics has been observed. It has been found that on irradiation the ferroelectric property decreases with decreasing values of P r and E c . The piezoelectric properties including d 33, electrostrictive strain and electromechanical coupling coefficient (K p ) also decrease following the same trend of P r and E c . Grain size decreases and grain patterns become irregular after irradiation as observed from SEM micrographs. The Thermoluminescence (TL) property of the barium stannate titanate ceramics has also been investigated and reported. [Copyright &y& Elsevier]