Dielectric properties of ceramic samples of Sr1−x PbxTiO3 solid solutions for x varying from 0 to 0.3 have been studied. The ferroelectric phase transition in this system has been established to persist down to x=0.005. Within the x values of 0.002 to 0.05, the ferroelectric transition temperature is shown to follow the relation T c=A(x−x c)1/2, with A=440 K and x c=0.002.
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Lemanov et al. (1997) studied this question.
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