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

S. Prosandeev, V. Trepakov, S. Kapphan, M. Savinov

cond-mat.mtrl-sciarXiv:cond-mat/0208317

Abstract

New experimental data on solid solutions of quantum paraelectrics with KTaO3: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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