Dielectric Constant and Conductivity Measurement of Powder Samples by the Cavity Perturbation Method
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概要
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The dielectric constant and conductivity of powder samples can be measured by a cavity perturbation method. A small amount of powder is placed at the point of maximum electric field intensity in a resonant cavity of TE_<103> mode at about 8935 MHz. Experimental data are analyzed by a theory which gives the complex conductivity of powders. The theory is based on the assumption that the quasistatic approximation is valid and there exists an equivalent powder depolarization factor. Coprecipitated Mn-Zn ferrite powder, 160Å in diameter, is used as a powder sample. The observed dielectric constant and conductivity are in the range 8〜16 and 0.01〜0.02&℧/cm, respectively. A Grounded n-Ge sample is also measured. The theory and measuring technique developed herein are general and may be applicable to measurement of various powder samples.
- 社団法人応用物理学会の論文
- 1971-03-05
著者
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Kobayashi Hiroshi
Department Of Cardiology Tokyo Medical University
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Ogawa Seiya
Department Of Material Research Fujitsu Laboratories
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Kobayashi Hiroshi
Department Of Electrical Engineering Faculty Of Engineering Science Osaka University
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Kobayashi Hiroshi
Department Of Applied Physics School Of Science And Engineering Waseda University
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