Dielectric and Conducting Properties of Single Crystal of Magnetite below the Verwey Point
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概要
- 論文の詳細を見る
Dielectric and conducting properties of synthesized single crystals of magnetitehave been studied below the Verwey point T.= 122 K. A wide frequency range of acfield and dc field have been adopted for the measurements. A magnetic field coolingtreatment has been used for controlling the alignment of c-axis (magnetic easy axisbelow T.). The properties along the c-axis and perpendicular to it show a con-siderable contrast. Also, a conspicuous dielectric relaxation has been found below 70K. The low temperature ac conductivity fits in with the relation o..ctco' (s?0.7 at 6.8K), consistent with the well known hopping conduction mechanism. The dc conduc-tivityiswellrepresentedbya,cxexp( -T4.5 T "'),andcr,.aexp( -55.0 T "'),suggesting that the mechanism of variable range hopping of charge carrierspredominates.
- 社団法人日本物理学会の論文
- 1986-11-15
著者
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Kobayashi Masakazu
Department of Cardiology, Nagoya University Graduate School of Medicine
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Kobayashi M
Niigata Univ. Niigata
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秋重 幸邦
島根大 教育
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Kobayashi M
Osaka Univ. Oska
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Kobayashi Masakazu
Departmdepartment Of Cardiology Nagoya University Graduate School Of Medicine
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AKISHIGE Yukikuni
Department of Physics,Faculty of Science,Hokkaido University
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SAWAGUCHI Etsuro
Department of Physics,Faculty of Science,Hokkaido University
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Sawaguchi E
Agne-gijutsu Center
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Sawaguchi Etsuro
Department Of Physics Faculty Of Science Hokkaido University
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Akishige Yukikuni
Department Of Physics Faculty Of Education Shimane University
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