This article is cited in 1 paper

Proceedings of the XIX All-Russian Conference on Physics of Ferroelectrics (VKS-XIX) (Moscow, Russia, June 19-23, 2011

Synthesis and dielectric properties of modified potassium sodium niobate solid solutions

I. Smeltere, M. Antonova, A. Kalvane, K. Bormanis, M. Livinsh

Institute of Solid State Physics, University of Latvia, Riga, LV-1063, Latvia

Abstract: In the present work processing microstructure and dielectric properties of lead free KNN based ceramics have been studied. Compositions with a stoichiometric formula $(1-x)$(K$_{0.5}$Na$_{0.5}$)Nb$_{1-y}$Sb$_y$O$_3$–$x$BaTiO$_3$ ($x$ = 0.01, 0.02, 0.04; $y$ = 0.04, 0.07) were produced by solid state sintering method. The addition of manganese oxide MnO$_2$ after synthesis promoted the sintering and densification of ceramic samples. The influence of BaTiO$_3$ on the microstructure, density and electrical properties was investigated. X-ray diffraction analysis confirmed that obtained samples had a pure perovskite structure with no traces of secondary phase. Phase transition peak at $T_c$ is broad indicating the diffuse phase transition.

 English version: Physics of the Solid State, 2012, 54:5, 994–996

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