SURFACE MAGNETISM OF THICK FE FILMS COATED BY MGO, MGF2 AND SB

被引:32
作者
HINE, S
SHINJO, T
TAKADA, T
机构
[1] Institute for Chemical Research, Kyoto University
关键词
D O I
10.1143/JPSJ.47.767
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The surface magnetism of thick Fe films coated by MgO, MgF2 and Sb was investigated by means of Mössbauer spectroscopy. The samples were prepared by the alternate depositions of a coating material, Fe56 (about 100 Å), Fe57 (4 Å) and a coating material in an UHV system. Measurements were carried out at 300 and 4.2 K with and without 45 kOe. The results showed all the samples were completely ferromagnetic and the magnetizations were oriented parallel to the film plane. The spectra were analyzed by computor fitting with assuming two six lines, the bulk part and the surface part. Although the surface effect on the isomer shift is similar in the three cases (i.e. larger than the bulk value), the effect on the hyperfine field remarkably depends on the coating materials; increase of hyperfine field in MgO- and MgF2-coated surfaces and decrease in Sb-coated case. © 1979, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.
引用
收藏
页码:767 / 772
页数:6
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