Electric Properties of Pb(Sb_<1/2>Nb_<1/2>)O_3-PbTiO_3-PbZrO_3 Ceramics (<Special Issue> FERROELECTRIC MATERIALS AND THEIR APPLICATIONS)

概要

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Solid-solution ceramics of ternary system xPb(Sb_<1/2>Nb_<1/2>)O_3-yPbTiO_3-zPbZrO_3 were prepared by the solidstate reaction of powder materials. Ceramic, electric, dielectric and piezoelectric properties and crystal structures of the system were studied. Sintering of the system xPb(Sb_<1/2>Nb_<1/2>)O_3-yPbTiO_3-zPbZrO_3 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 constants, high radial coupling coefficient and low resonant resistance were obtained for the composition near the morphotropic transformation. The comrposition Pb(Sb<1/2>Nb_<1/2>)_<0.075>Ti_<0.45>Zr_<0.475>O_3 showed the highest dielectric constant (εr=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 (kp=64%).
社団法人応用物理学会の論文
1994-09-30