US5356843A
Expired / Lapsed
US
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Dielectric ceramic compositions and dielectric resonators
Assignee: Panasonic Holdings Corp
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Filing: 1993-09-03
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Granted: 1994-10-18
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Expires: 2013-09-03
Abstract
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 TE01 delta -mode dielectric resonator including the dielectric ceramic, and also the invention provides a dielectric ceramic composition expressed by Formula (a): xZrO2-yTiO2-zA(1+w)/3Nb(2-w)/3O2(a) wherein A denotes at least one component selected from the group (A) consisting of {Mg, Co, Zn, Ni and Mn}, x, y and z denote molar fractions ranging from 0.10 to 0.60, 0.20 to 0.60 and 0.01 to 0.70, respectively, and have the relation represented by Formula ( alpha ): x+y+z=1( alpha ) and w denotes a value of 0 to 1.50, and a TE01 delta -mode dielectric resonator in which using the dielectric ceramic.
Inventors
- 👤 Kojiro Okuyama
- 👤 Yoichiro Yokotani
- 👤 Koichi Kugimiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:56
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/12; C; C04; C04B; C04B35/00; C04B35/01; C04B35/48; C04B35/49; H01P; H01P7/00; H01P7/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
A dielectric ceramic comprising 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, said main component comprising a ZrTiO 4 phase substituted with at least one component of group (A) and at least one component of group (B), or the main component has a crystal structure comprising a ZrTiO 4 phase substituted with at least one component of group (A) and at least one component of group (B), wherein the molar fraction ratio of the total amount of group (A) to the total amount of group (B) is from 0.5 to 1.0.
Claim 2
Dependent Claim
128 words
A dielectric ceramic comprising 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, said main component comprising a ZrTiO 4 phase substituted with at least one component of group (A) and at least one component of group (B), or the main component has a crystal structure comprising a ZrTiO 4 phase substituted with at least one component of group (A) and at least one component of group (B), wherein the molar fraction ratio of the total amount of group (A) to the total amount of group (B) is from 0.5 to 1.0.
Claim 3
Dependent Claim
72 words
A dielectric ceramic composition expressed by Formula (a): xZrO.sub.2 --yTiO.sub.2 --zA.sub.(1+w)/3 Nb.sub.(2-w)/3 O.sub.2(a) wherein A denotes at least one component selected from the group (A) consisting of Mg, Co, Zn, Ni and Mn, x, y and z denote molar fractions ranging from 0.10 to 0.60, 0.20 to 0.60 and 0.01 to 0.70, respectively, and have the relation represented by Formula (α): x+y+z=1 (α) and w denotes a value of 0 to 1.50.
Claim 4
Dependent Claim
72 words
A dielectric ceramic composition expressed by Formula (a): xZrO.sub.2 --yTiO.sub.2 --zA.sub.(1+w)/3 Nb.sub.(2-w)/3 O.sub.2(a) wherein A denotes at least one component selected from the group (A) consisting of Mg, Co, Zn, Ni and Mn, x, y and z denote molar fractions ranging from 0.10 to 0.60, 0.20 to 0.60 and 0.01 to 0.70, respectively, and have the relation represented by Formula (α): x+y+z=1 (α) and w denotes a value of 0 to 1.50.
Claim 5
Dependent Claim
72 words
A dielectric ceramic composition expressed by Formula (b): xZrO.sub.2 --yTiO.sub.2 --zA.sub.(1+w)/3 Ta.sub.(2-w)/3 O.sub.2(b) wherein A denotes at least one component selected from the group (A) consisting of Mg, Co, Zn, Ni and Mn, x, y and z denote molar fractions ranging from 0.10 to 0.60, 0.10 to 0.60 and 0.01 to 0.80, respectively, and have the relation represented by Formula (α): x+y+z=1 (α) and w denotes a value of 0 to 1.00.
Claim 6
Dependent Claim
72 words
A dielectric ceramic composition expressed by Formula (b): xZrO.sub.2 --yTiO.sub.2 --zA.sub.(1+w)/3 Ta.sub.(2-w)/3 O.sub.2(b) wherein A denotes at least one component selected from the group (A) consisting of Mg, Co, Zn, Ni and Mn, x, y and z denote molar fractions ranging from 0.10 to 0.60, 0.10 to 0.60 and 0.01 to 0.80, respectively, and have the relation represented by Formula (α): x+y+z=1 (α) and w denotes a value of 0 to 1.00.
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