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arxiv: cond-mat/0208317 · v1 · submitted 2002-08-15 · ❄️ cond-mat.mtrl-sci

Dielectric Response in Microscopically Heterogeneous Dielectrics: Example of KTaO₃:Nb

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New experimental data on solid solutions of quantum paraelectrics with KTaO_3:Nb as an example are considered within a framework of a quantum theory of ferroelectric phase transitions. In order to describe the effect of local heterogeneities a percolation type theory together with a random field approach were employed.

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