Dielectric ceramic composition for high frequency and dielectric resonator
AssigneeHayashi Chemical Industry Co., Ltd.
InventorsSusumu Okamoto, Yoshitaka Nagamori, Toshiaki Maeoka
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Abstract
A dielectric ceramic composition for high frequency is obtained by using La and/or Nd in the main composition and iron as the additive. The main composition is expressed by the general formula x(CayTiO2+y)·(1−x)(LnzAl2−zO3) where Ln is at least one rare earth element containing La and/or Nd, and 0.600≦x≦0.730, 0.950≦y≦1.050, 0.980≦z≦1.030, and 0.01 to 0.5 parts by weight of iron as Fe2O3 is added to 100 parts by weight of the main composition. NiO may be comprised together with the Fe2O3.
Claims3
A dielectric ceramic composition for high frequency, in which the main composition is expressed by the general formula
- x(CayTiO2+y)·(1−x)(LnzAl2−zO3)
- where Ln is at least one rare earth element containing La and/or Nd, and 0.600≦x≦0.730, 0.950≦y≦1.050, 0.980≦z≦1.030, and 0.01 to 0.5 parts by weight of iron as Fe2O3 is added to 100 parts by weight of the main composition.
A dielectric resonator prepared by firing a ceramic composition in which the main composition is expressed by the general formula
- x(CayTiO2+y)·(1−x)(LnzAl2−zO3)
- where Ln is at least one rare earth element containing La and/or Nd, and 0.600≦x≦0.730, 0.950≦y≦1.050, 0.980≦z≦1.030, and 0.01 to 0.5 parts by weight of iron as Fe2O3 is added to 100 parts by weight of the main composition.
Dependencies are inferred from the claim text.