Abstract
A novel mixed-sintering technique for obtaining new ceramics with a large dielectric constant (ε) and small temperature dependence is studied. In this technique, ceramic mixtures called mixed-sintering ceramics (MSCs) are formed by combining two or more perovskites which are calcined at a given temperature and ground into powder. This paper discusses the preparation method and dielectric temperature dependence of MSCs using x=0.1 and x=0.5 in a pseudobinary xPb(Fe2/3W1/3)O3–(1-x)Pb(Fe1/2Nb1/2)O3 system. The resulting MSCs exhibit a large ε≃12,000 and, compared to conventionally sintered ceramics, the temperature dependence in MSCs can be significantly reduced in the range of -25° to 85°C without using additives.
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