Dielectric properties and conductivity in the systems BaTiO₃-YBa₂Cu₃O₇-δ and PbTiO₃-BaPbO₃

E. D. Politova L. Ya. Karpov Institute of Physical Chemistry, Moscow, 107120, Russia

G. M. Kaleva L. Ya. Karpov Institute of Physical Chemistry, Moscow, 107120, Russia

I. V. Ol'chovik L. Ya. Karpov Institute of Physical Chemistry, Moscow, 107120, Russia

S. Yu. Stefanovich L. Ya. Karpov Institute of Physical Chemistry, Moscow, 107120, Russia

Yu. N. Venevtsev L. Ya. Karpov Institute of Physical Chemistry, Moscow, 107120, Russia

Abstract

Ferroelectric solid solutions exist in the systems (I-x)BaTiO₃-xY⅓Ba ⅔CuO_3−δ, (I) and (I-x)PbTiO₃-xBaPbO₃ (II) in the concentration regions 0 ≤ x ≤ 0.02 (I) and 0 ≤ x ≤ 0.5 (II). The addition of the compounds with metallic conductivity deteriorates ferroelectric properties; it leads to the decrease of the Curie temperature and the spontaneous polarization. Nevertheless, high polarizability still exist in the samples of the system I with x < 0.5.

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Dielectric properties and conductivity in the systems BaTiO₃-YBa₂Cu₃O₇-δ and PbTiO₃-BaPbO₃

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Dielectric properties and conductivity in the systems BaTiO₃-YBa₂Cu₃O₇-δ and PbTiO₃-BaPbO₃