Antiferromagnetic Transition Temperature of MnO Ultrafine Particle
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概要
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The size dependence of Neel temperature T_N of MnO ultrafine particles in LiF matrix with the average size range from 4. 0 nm to 5. 4 nm was investigated through the temperature dependence of the ESR linewidth. It was found that the T_N of MnO ultrafine particles becomes smaller than that in bulk state, and decreases as the size becomes smaller. The fact is mainly attributed to the smallness of the coordination number of surface atom in a particle. This tendency is also confirmed by the calculation of using mean field approximation of the Ising clusters.
- 社団法人日本物理学会の論文
- 1995-03-15
著者
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Sako S
Tohoku Univ. Sendai
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Sako S
Mie Univ. Tsu Jpn
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Sako Sanshiro
Department Of Physics Faculty Of Education Mie University
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Ohshima Kazunari
Laboratory Of Physics Matsumoto Dental Collage
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Ohshima Kazunari
Laboratory Of Physics Matsumoto Dental College
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