Deviation of dielectric properties in magnesium titanate ceramics

Takuro Sato; Ryoichi Miyamoto; Atsushi Fukasawa

doi:10.7567/JJAPS.20S4.151

Deviation of dielectric properties in magnesium titanate ceramics

Takuro Sato, Ryoichi Miyamoto, Atsushi Fukasawa

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

Extremely low loss and high permittivity magnesium titanate (MgTiO₃) ceramics has been developed as a medium in the composition of miniaturized microwave filters. This dielectric ceramics is characterized by the facts that the molar composition of major component materials, MgO and TiO₂, is a little deviated from the stoichiometric ratio and that a 3rd component material, CaO, is added for compensation of temperature characteristics. The permittivity (ε_r), unloaded Q (Q_u) and temperature coefficients of resonator frequency (T.C(f)) of this material are estimated to be ε_r=20, Q_u=9000 at 6.3 GHz and T.C(f)=0±2 ppm/°C.

Original language	English
Pages (from-to)	151-154
Number of pages	4
Journal	Japanese journal of applied physics
Volume	20
DOIs	https://doi.org/10.7567/JJAPS.20S4.151
Publication status	Published - 1981 Jan
Externally published	Yes

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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abstract = "Extremely low loss and high permittivity magnesium titanate (MgTiO3) ceramics has been developed as a medium in the composition of miniaturized microwave filters. This dielectric ceramics is characterized by the facts that the molar composition of major component materials, MgO and TiO2, is a little deviated from the stoichiometric ratio and that a 3rd component material, CaO, is added for compensation of temperature characteristics. The permittivity (εr), unloaded Q (Qu) and temperature coefficients of resonator frequency (T.C(f)) of this material are estimated to be εr=20, Qu=9000 at 6.3 GHz and T.C(f)=0±2 ppm/°C.",

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AU - Sato, Takuro

AU - Miyamoto, Ryoichi

AU - Fukasawa, Atsushi

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AB - Extremely low loss and high permittivity magnesium titanate (MgTiO3) ceramics has been developed as a medium in the composition of miniaturized microwave filters. This dielectric ceramics is characterized by the facts that the molar composition of major component materials, MgO and TiO2, is a little deviated from the stoichiometric ratio and that a 3rd component material, CaO, is added for compensation of temperature characteristics. The permittivity (εr), unloaded Q (Qu) and temperature coefficients of resonator frequency (T.C(f)) of this material are estimated to be εr=20, Qu=9000 at 6.3 GHz and T.C(f)=0±2 ppm/°C.

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