High frequency dielectric ceramic compositions

Details High frequency dielectric ceramic compositions High frequency dielectric ceramic compositions

1983-08-30

1984-11-27

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

361321, 423266, 423593, C04B 3500

Patent

active

044851804

ABSTRACT:
A high frequency dielectric ceramic composition is described, said composition being represented by the formula: Ba(Zr.sub.x Zn.sub.y Ta.sub.z)O.sub.7/2-x/2-3y/2, wherein 0.02.ltoreq.x.ltoreq.0.13, 0.28.ltoreq.y.ltoreq.0.33 and 0.59.ltoreq.z.ltoreq.0.65 (where x+y+z=1). The ceramic composition has a complex perovskite structure, provides a high dielectricity and high Q value at high frequency and selectively provides a temperature coefficient of resonant frequency with a center value of 0 ppm/.degree.C., without using high sintering temperatures and/or long sintering times.

REFERENCES:
patent: 3464785 (1969-09-01), Galasso
patent: 4121941 (1978-10-01), Kawashima et al.
Kawashima, S. et al., Proceedings of the First Meeting on Ferroelectric Materials and Their Applications, Kyoto 1977, "Dielectric Properties of Ba(Zn.sub.1/3 NB.sub.2/3)O.sub.3 -Ba(Zn.sub.1/3 Ta.sub.2/3)O.sub.3 Ceramics at Microwave Frequency", pp. 293-296.
Annual Report of Study Group on Applied Ferroelectrics in Japan, vol. 30, (Feb. 1983), pp. 18-23.
Journal of the American Ceramic Society, (Jun. 1983), vol. 66, No. 6, pp. 421-423, "Ba(Zn.sub.1/3 Ta.sub.2/3)O.sub.3 Ceramics with Low Dielectric Loss at Microwave Frequencies."

Affiliated with

Also associated with

Rating

High frequency dielectric ceramic compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High frequency dielectric ceramic compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High frequency dielectric ceramic compositions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2134820