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The effect of Sr 2+ substitution on the structure and dielectric behaviour of BaTiO 3 is reported. It is shown that the smearing of the variation of dielectric constant with temperature in such samples is not due to compositional inhomogeneities. Observation of relaxational dipolar freezing below the hump temperature indicates the similarity of diffuse ferroelectric transition and orientational glass behaviour.
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Tiwari et al. (1995) studied this question.
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