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We have carried out powder x-ray diffraction and dielectric studies on thelead free solid solution (1-x)SrTiO3-xBi(Zn1/2Ti1/2)O3 ((1-x)ST-xBZT) withx=0.05, 0.10, 0.15, 0.20, 0.30 and 0.50 to explore the ferroelectric andpiezoelectric properties. Analysis of the powder x-ray diffraction data revealsthe cubic structure (space group Pm3m) of (1-x)ST-xBZT for the composition withx < 0.20, at room temperature as well as at low temperature. Highly tetragonalBZT fails to introduce any tetragonality when alloyed with ST. The solidsolubility is limited to x< 0.20 and for higher BZT concentrations impurityphases start appearing. The ferroelectric and dielectric characterization of(1- x)ST-xBZT solid solution shows that all the compositions are paraelectric.The implications of the absence of tetragonal distortion in (1-x)ST-xBZT solidsolution is discussed in connection with recently investigated other solidsolutions based on BZT.

Absence of Tetragonal Distortion in (1-x)SrTiO3-xBi(Zn1/2Ti1/2)O3 Solid Solution