BaTiO_3-Pb(Mg_<1/3>Nb_<2/3>)O_3系誘電体の合成と誘電的性質

概要

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The phase, lattice parameter and dielectric constant-temperature characteristics of BaTiO_3-Pb(Mg_<1/3>Nb_<2/3>)O_3 [PMN] solid solutions were investigated using XRD and impedance analysis. The solid solutions were divided into three different compositional regions from the temperature dependence of dielectric constant. In the range from O to 10 mol% PMN, peaks in dielectric constant-temperature plots became broader and Curie temperature decreased with increasing PMN content. In the range from 15 to 60 mol%, the dielectric constant was very low and peaks were extremely broad. In the range from 80 to 100 mol%, the dielectric constant was high and its temperature coefficient was small. The ferroelectric phase transition from normal to diffuse phase is also discussed.
社団法人日本セラミックス協会の論文
1993-05-01