High Dielectric Permittivity in AFe${}_{1/2}$B${}_{1/2}$O${}_3$ Nonferroelectric Perovskite Ceramics (A - Ba, Sr, Ca; B - Nb, Ta, Sb)

Abstract

AFe${}_{1/2}$B${}_{1/2}$O${}_3$(A- Ba, Sr, Ca; B-Nb, Ta, Sb) ceramics were synthesized and temperature dependencies of the dielectric permittivity were measured at different frequencies. The experimental data obtained show very high values of the dielectric permittivity in a wide temperature interval that is inherent to so-called high-k materials. The analyses of these data establish a Maxwell-Wagner mechanism as a main source for the phenomenon observed.

6 pages, 7 figures

References in corpus (1)

• A first-principles study of the structure and lattice dielectric response of CaCu{3}Ti{4}O{12}

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