Abstract
Phase transitions in solid solutions of strontium titanate with titanates of the divalent metals Pb, Ba, and Ca are considered. It is shown that the critical concentration x c in the well-known expression relating the transition temperature to the polar state in SrTiO3 with the concentration x of divalent metals, T c=A(x−x c)1/2, is practically the same for all impurities. For large values of x, the ferroelectric transition temperature T c depends linearly on x. The volume and impurity contributions to the T c(x) relation are determined for this concentration range.
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Fiz. Tverd. Tela (St. Petersburg) 39, 1645–1651 (September 1997)
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Lemanov, V.V. Phase transitions in SrTiO3-based solid solutions. Phys. Solid State 39, 1468–1473 (1997). https://doi.org/10.1134/1.1130100
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DOI: https://doi.org/10.1134/1.1130100