Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1979-01-12
1980-08-26
Kucia, Richard R.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
106 398, 252 632, 361322, H01G 412
Patent
active
042198666
ABSTRACT:
A ceramic capacitor has a dielectric body including a ceramic and a low melting flux. The ceramic consists of a major proportion of an antiferroelectric lead lanthanum zirconate titanate and a minor proportion of a barium titanate. The body may also include up to 10 weight percent of a low melting flux, which is especially useful in monolithic ceramic capacitors having buried silver-containing electrodes. These dielectric bodies exhibit at moderate voltage stress levels an improved combination of properties including a high dielectric constant that is relatively stable with changing voltage and temperature.
REFERENCES:
patent: 2541833 (1951-02-01), Roberts
patent: 3440067 (1969-04-01), Fujiwara
patent: 3732117 (1973-05-01), Nitta
patent: 4027209 (1977-05-01), Maher
G. Haertling, Hot Pressed (Pb,La)Zr,Ti)O.sub.3 Ferroelectric Ceramics for Electrooptic Applications, J. Amer. Ceramics Soc., v. 54, #1, Jan. 71, pp. 1-11.
T. Ikeda, Studies of (Ba-Pb)(Ti-Zr)O.sub.3 System, J. Physical Society of Japan, vol. II, #2, Feb. 1969, pp. 168-174.
Shepard Roberts, Dielectric Properties of Lead Zirconate and Barium-Lead Zirconate, J. of Am. Ceramic Soc., vol. 33, #2, 1950, pp. 63-66.
Kucia Richard R.
Sprague Electric Company
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