Dielectric ceramic compositions and dielectric resonators

Details Dielectric ceramic compositions and dielectric resonators Dielectric ceramic compositions and dielectric resonators

1993-09-03

1994-10-18

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

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

501136, C04B 3549

Patent

active

053568435

ABSTRACT:
The invention provides a dielectric ceramic including as the main component a complex oxide formed of both Zr and Ti, at least one component selected from the group (A) consisting of {Mg, Co, Zn, Ni and Mn} and at least one component selected from the group (B) consisting of {Nb and Ta} and a TE.sub.01 .delta.-mode dielectric resonator including the dielectric ceramic, and also the invention provides a dielectric ceramic composition expressed by Formula (a):

REFERENCES:
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patent: 4968649 (1990-11-01), Tsurumi et al.
patent: 5019306 (1991-05-01), Huang et al.
patent: 5077247 (1991-12-01), Sato et al.
patent: 5128290 (1992-07-01), Yamada et al.
patent: 5132258 (1992-07-01), Takahashi et al.
Lynch, R. W., et al; "Thermal Expansion, Compressibility and Polymorphism in Hafnium and Zirconium Titanates", J. Am. Ceram. Soc., 55 pp. 409-413 (1972).
McHale, A. E. et al; "Low-Temperature Phase Relationships in the System ZrO.sub.2 -TiO.sub.2 ", J. Am. Ceram. Soc., 69 [11], pp. 827-832 (1986).
Yamamoto, A. et al; "Modulated Structure of Zirconium Titanate", Acta Cryst. (1991) C47, pp. 1588-1591.

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