機能性セラミックスの高次構造と物性

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One often adds dopants to ceramics intentionally to control their properties. A new idea on the dopant effect is described through a study of La-doped barium titanate semiconductor. Recently many functional ceramics associated with grain boundaries, such as varistor, posistor and Mn-Zn ferrite with a very small eddy current loss have been developed. In this review essential character of grain boundaries in ZnO varistor is also described. Moreover reliability and reporducibility of properties of perovskitetype ceramics are discussed in relation to nonequilibrium structures appeared during the preparatian. [J. Cryst. Soc. Jpn. <B>28</B>, <I>180</I> (1986) ] .
日本結晶学会の論文