Fe_<16>N_2単結晶膜の低温X線回折および巨大磁気モーメントの確認

概要

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The X-ray diffraction patterns of an Fe_<16>N_2 film epitazially grown on an in_<0.2>Ga_<0.8>As (001) substrate at 300K were measured. Clear peaks were detected in several planed involving the α-axis of Fe_<16>N_2 . The lattice constants of the α-and c-axes of the Fe_<16>N_2 film at 300K were 5.723A and 6.277A, respectively. In addition, X-ray diffraction patterns were measured in the temperature range between 20K and 300K in order to evaluate the temperature dependence of a unit cell volune of Fe_<16>N_2. The lattice constants of the α-and c-axes of the Fe_<16>N_2 film at 20K were 5.730A and 6.261A, respectively. The unit cell volume of Fe_<16>N_2 is likely to be constant below 300K that is around 205.6A^3. The magnetic moment per Fe atom for Fe_<16>N_2, calculated from the unit cell volume and saturation magnetization was 3.23 μ_B at 300K and 3.53 μ_B at 20K.
社団法人日本磁気学会の論文
1998-04-15