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Synthesis and Sintering of (K,Na)NbO3 Based Ceramics
Published online by Cambridge University Press: 11 February 2011
Abstract
Stoichiometric K0.5Na0.5NbO3 solid solution(KNN) was prepared by solid-state synthesis from alkaline carbonates and niobium oxide. Thermal decomposition of the powder mixture occurs upon heating to 700 °C followed by crystallization of the perovskite phase. After sintering at 1100 °C, 2h the stoichiometric KNN reaches 94 % of theoretical density. Dielectric constant of stoichiometric KNN is 620, and the losses 0.03.
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- Copyright © Materials Research Society 2003
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