Studies on the formation of magnetite colloidal dispersions in the presence of poly(vinyl alcohol).
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概要
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The formation of magnetite in aqueous solutions containing Fe<SUP>3+</SUP> and Fe<SUP>2+</SUP> ions in 2:1–1:2 ratio and poly(vinyl alcohol) at room temperature has been studied by magnetic susceptibility and optical absorption measurements. It has been found that the yield reaches a maximum after allowing the solutions at pH 10.5 to stand in a sealed state for 24 h. Transmission electron micrographs for their cast films have revealed that colloidal particles with diameters of 40–100 Å form either chain-like or cluster-like agglomerates. The particles have been identified as magnetite crystals by electron diffraction analysis and by direct observation of the crystal lattice structures.
- 公益社団法人 日本化学会の論文
著者
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NAKANISHI Yoichiro
Research Institute of Electronics, Shizuoka University
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Nakanishi Yoichiro
Research Institute Of Electronics Graduate School Of Electronic Science And Technology Shizuoka Univ
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Yokoi Hiroshi
Department Of Applied Chemistry Faculty Of Engineering Shizuoka University
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Yagishita Kazuhiro
Department of Applied Chemistry, Faculty of Engineering, Shizuoka University
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