Magnetic Susceptibility of Some Mixed-Metal Compounds : NBu_4Zn(II)_xFe(II)_<1-x>[Fe(III)(ox)_3]
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概要
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The temperature dependence of the molar magnetic susceptibility of NBu_4Zn(II)_xFe(II)_<1-x>[Fe(III)(ox)_3] compounds, where NBu^+_4 =tetra-n-butylammonium ion and ox^2 =oxalate ion with 0≤x<1 were studied in the temperature range of 5-290 K. The compounds with x≤0.1 showed two susceptibility maxima on temperature scale in 40.5-43.5 K and 10-24 K temperature ranges. These compounds undergo ferrimagnetic transition in the 40.5-43.5 K range. The difference in their magnetic susceptibility variations with temperature in the field-cooled and zero field-cooled modes indicated that these compounds exist in a "spin-glass" like state below 35 K range. The molar magnetic susceptibility variation with temperature obeys the Curie-Weiss law at higher temperatures (>90±10 K). Several x dependent Curie-Weiss constant were evaluated.
- 1995-03-15
著者
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大川 尚士
九大院理
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Okawa Hisashi
Department Of Chemistry Faculty Of Science Kyushu University
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Okawa Hisashi
Department Of Chemistry Graduate School Of Science Kyushu University
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Iijima S
Fundamental Research Laboratories Nec Corporation
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Iijima Sumio
Fundamental Research Laboratories Nec Corporation
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Okawa H
Kyushu Univ. Fukuoka Jpn
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Mizutani Fumio
Biomolecular Engineering Department National Institute Of Bioscience And Human-technology
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Matsumoto Naohide
Department Of Chemistry Faculty Of Science Kumamoto University
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Matsumoto N
Department Of Chemistry Faculty Of Science Kyushu University
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Bhattacharjee Ashis
Biomolecular Engineering Department, National Institute of Bioscience and Human-Technology
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Iijima Seiichiro
Biomolecular Engineering Department, National Institute of Bioscience and Human-Technology
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Katsura Tatsuo
Biomolecular Engineering Department, National Institute of Bioscience and Human-Technology
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Bhattacharjee Ashis
Biomolecular Engineering Department National Institute Of Bioscience And Human-technology
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Katsura T
Biomolecular Engineering Department National Institute Of Bioscience And Human-technology
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Matsumoto Naohide
Department of Applied Chemistry, Faculty of Engineering, Kumamoto University
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