DIELECTRIC CERAMIC AND DIELECTRIC RESONATOR

DIELECTRIC CERAMIC AND DIELECTRIC RESONATOR

PROBLEM TO BE SOLVED: To provide a dielectric ceramics having a resonance frequency which hardly changes according to temperature, and to provide a dielectric resonator using the same. SOLUTION: The dielectric ceramics is characterized in that, when compositional formula is expressed by αLa2Ox*βAl2O...

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Bibliographische Detailangaben
Hauptverfasser: TOYODA SATOSHI, MURAKAWA SHUNICHI, HIRAHARA SEIICHIRO
Format: Patent
Sprache:eng
Schlagworte:
ARTIFICIAL STONE
BASIC ELECTRIC ELEMENTS
CABLES
CAPACITORS
CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
CONDUCTORS
ELECTRICITY
INSULATORS
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES
SLAG
TREATMENT OF NATURAL STONE
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a dielectric ceramics having a resonance frequency which hardly changes according to temperature, and to provide a dielectric resonator using the same. SOLUTION: The dielectric ceramics is characterized in that, when compositional formula is expressed by αLa2Ox*βAl2O3*γCaO*δTiO2(wherein, 3≤x≤4), the content of barium is 0.001 to 0.009 pts.mol expressed in terms of oxide with respect to 100 pts.mol of a component in which the molar ratios α, β, γ and δ satisfy expressions; 0.16≤α≤0.21, 0.16≤β≤0.22, 0.29≤γ≤0.36 and 0.29≤δ≤0.37 (wherein, α+β+γ+δ=1), and that CaTiO3crystals are contained. COPYRIGHT: (C)2011,JPO&INPIT