Annealing Effects on Transport and Magnetic Properties of Perovskite-Type Vanadium Oxide CaVO_3
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概要
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We report transport and magnetic properties for single-crystalline CaVO_3, which are seriously affected by oxygen off-stoichiometry. The electrical resistivity of a stoichiometric sample is well fit by the relationρ=ρ_0 +AT^2 in an extremely wide temperature range. Oxygen off-stoichiometry causes the systematic increment of both p_0 and A. Magnetoresistance data also change drastically due to the oxygen off-stoichiometry ; the stoichiometric sample shows positive magnetoresistance with B^2 dependence, while a sample with a small number of oxygen vacancies shows an unusual negative magnetoresistance. Magnetic susceptibility of the latter sample shows Curie-Weiss behavior, while that of the former one shows Pauli paramagnetic behavior.
- 社団法人日本物理学会の論文
- 1994-02-15
著者
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Iga Fumitoshi
Electrotechnical Laboratory
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Murata K
Department Of Organic And Polymeric Materials Tokyo Institute Of Technology
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MURATA Keizo
Electrotechnical Laboratory
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NISHIHARA Yoshikazu
Electrotechnical Laboratory
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Murata K
Electrotechnical Laboratory
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Murata K
Department Of Material Science Graduate School Of Science Osaka City University
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Murata Keizo
Osaka City University
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Fukushima Akio
Electrotechnical Laboratory
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MURATA Kazuhiro
Electrotechnical Laboratory
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Inoue H.
Electrotechnical Laboratory
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Murata Kazuhiro
Department Of Physics Division Of Material Science Nagoya University
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Murata K
Tokyo Medical And Dental Univ. Tokyo Jpn
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Murata Keizo
Electorotechnical Laboratory
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NISIHARA Yoshikazu
Tsukuba Reserch Center,SANYO Co.Ltd.,
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Nishihara Y
Electrotechnical Lab. Tsukuba
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Murata Keiichi
Department Of Neurophysiology Medical Research Institute Tokyo Medical And Dental University
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