アンチモンニオブ酸鉛-チタン酸鉛-ジルコン酸鉛系磁器の作製と電気的性質

概要

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Present study reports the preparation and electric properties of Pb (Sb_<1/2>Nb_<1/2>)O_3-PbTiO_3-PbZrO_3 ceramics. Solid solution ceramics of ternary system xPb (Sb_<1/2>Nb_<1/2>)O_3-yPbTiO_3-zPbZrO_3 were prepared by the solid state reaction of powder materials. Ceramic, electric, dielectric and piezoelectric properties and crystal structures of the system were studied. Sintering of the ternary systems is much easier than that of each end composition, and well-sintered high density ceramics were obtained for the compositions near the morphotropic transformation. Piezoelectric ceramics with high relative dielectric constant, high radial coupling coefficient and low resonant resistance were obtained for the composition near the morphotropic transformation. The composition Pb (Sb_<1/2>Nb_<1/2>)_<0.075>Ti_<0.45>Zr_<0.475>O_3 showed the highest relative dielectric constant ε_r=1690,and the composition Pb (Sb_<1/2>Nb_<1/2>)_<0.05>Ti_<0.45>Zr_<0.5>O_3 showed the highest radial coupling coefficient k_p=64%.
湘南工科大学の論文
1997-03-25