Mechamsm of Microwave Dielectric Dispersion in Polycrystalline BaTiO_3

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概要

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• The frequency dependence and temperature dependence of the dielectric constant, far infrared refiectivities, grain sizes and densities of polycrystalline BaTiO_3, SrTiO_3 and TiO_2 were measured. From the results obtained, it is shown that, in BaTiO_3, the microwave dispersion occurs only in the ferroelectric phase and the dielectric constant at low frequencies corresponds to that under the condition of constants stress. Thus, it is concluded that the microwave dispersion in polycrystalline BaTiO_3 is due to the transition of the dielectric constant from the value at "free" state to that at "clamped" state with increasing frequency, in the neighborhood of the resonance frequencies of piezoelectric vibration of single domains in grains of this material.

• 社団法人日本物理学会の論文
• 1963-08-05

著者

• Ikegami Seiji

  Research Laboratory Wireless Division Matsushita Electric Industrial Company

• Ikegami Seiji

  Research Department Wireless Division Matsushita Electric Industrial Co.

• Ikegami S.

  Research Laboratory, Wireless Division, Matsushita Electric Industrial Company

関連論文

• Mechanism of Aging in Polycrystalline BaTiO_3
• Mechamsm of Microwave Dielectric Dispersion in Polycrystalline BaTiO_3
• Semiconductive Single Crystal of BaTizO_3 Reduced in Hydrogen Atmosphere
• Dielectric Breakdown of Polycrystalline BaTiO_3
• Temperature Dependence of the Breakdown Field of Ceramic BaTiO_3
• Oxidation Phenomena in Semiconducting BaTiO_3
• Some Phenomena of Poling Process in Reduced BaTiO_3 Crystal
• Raman Spectrun of BaTiO_3

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