Surface Magnetism of α-FeO(OH) and β-FeO(OH) by Mossbauer Spectroscopy
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概要
- 論文の詳細を見る
Fine particles of α-FeO(OH) and β-FeO(OH) were prepared using ^<56>Fe isotope and the surfaces of the particles were coated with extremely thin ^<57>Fe(III) layers. Mossbauer results show that the Fe(III) ions in the top surface layer are involved in the magnetic order and the surface hyperfine fields rapidly decrease with increasing temperature. The exchange fields at surface sites, estimated from the temperature dependences of the hyperfine fields, are smaller than the bulk values in both cases. The decrease of exchange fields at the surface sites corresponds to the reduced number of neighboring magnetic ions at each site.
- 社団法人日本物理学会の論文
- 1994-01-15
著者
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SHINJO Teruya
Institute for Chemical Research,Kyoto University
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KIYAMA Masao
Institute for Chemical Research, Kyoto University
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Kiyama Masao
Institute For Chemical Research Kyoto University
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Kiyama M
Institute For Chemical Research Kyoto University
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YAMAMOTO Akitoshi
Shonan High School
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Shinjo Teruya
Institute For Chemical Research Kyoto Universiry
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Yamamoto Akinori
Institute for Chemical Research, Kyoto University
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Honmyo Torayuki
Institute for Chemical Research, Kyoto University
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Yamamoto Akinori
Institute For Chemical Research Kyoto University
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Honmyo Torayuki
Institute For Chemical Research Kyoto University
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