Compositions: ceramic – Ceramic compositions – Titanate – zirconate – stannate – niobate – or tantalate or...
Patent
1983-03-22
1984-05-08
Bell, Mark
Compositions: ceramic
Ceramic compositions
Titanate, zirconate, stannate, niobate, or tantalate or...
501137, 501139, C04B 3546
Patent
active
044475497
ABSTRACT:
A D-E hysteresis loop of ferroelectrics known in the art has a square shape when the ferroelectrics are a BaTiO.sub.3 single crystal. Such ferroelectrics are used as a non-linear dielectric element of, for example a pulse generating device. The non-linear dielectric element according to the present invention consists of a polycrystal, which is mainly composed of BaTiO.sub.3 and has the chemical composition expressed by the formula A.sub.y B.sub.z O.sub.3, wherein the molar ratio of y/z ranges from 0.92 to 0.99. The non-linearity is excellent and the temperature dependence of the A.sub.y B.sub.z O.sub.3 composition is considerably low.
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Matsuyama et al., "Pulse-Like Voltage Generation Using Polarization Reversal of Ferroelectric Ba-Substituted Pb (Zr, Ti)O.sub.3 Ceramics", Japan Journal Applied Physics, vol. 16, 1977, No. 10, pp. 1871-1872.
Anderson, J. R., "Ferroelectric Storage Elements for Digital Computers and Switching Systems", Electrical Engineering, Oct. 1952, pp. 916-922.
Abe Hisao
Fujiwara Shinobu
Kikuchi Nobuaki
Masujima Sho
Midori Yoshifumi
Bell Mark
TDK Kabushiki Kaisha
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