High Dielectric Permittivity in AFe$_{1 / 2}$B$_{1 / 2}$O$_{3}$ Nonferroelectric Perovskite Ceramics (A - Ba, Sr, Ca; B - Nb, Ta, Sb)

I. P. Raevski; S. A. Prosandeev; A. S. Bogatin; M. A. Malitskaya

doi:10.1063/1.1558205

paper

High Dielectric Permittivity in AFe $_{1/2}$ B $_{1/2}$ O $_{3}$ Nonferroelectric Perovskite Ceramics (A - Ba, Sr, Ca; B - Nb, Ta, Sb)

arXiv:cond-mat/0209015 · doi:10.1063/1.1558205

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

High Dielectric Permittivity in AFe1/2​B1/2​O3​ Nonferroelectric Perovskite Ceramics (A - Ba, Sr, Ca; B - Nb, Ta, Sb)

Abstract

High Dielectric Permittivity in AFe $_{1/2}$ B $_{1/2}$ O $_{3}$ Nonferroelectric Perovskite Ceramics (A - Ba, Sr, Ca; B - Nb, Ta, Sb)