MAGNETIC ORDER NEAR FE(100) INTERFACES FROM MOSSBAUER-SPECTROSCOPY

被引：28

作者：

LIU, G ^{[1
]}

GRADMANN, U ^{[1
]}

机构：

[1] TECH UNIV CLAUSTHAL,INST PHYS,W-3392 CLAUSTHAL ZELLERFE,GERMANY

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1993年 / 118卷 / 1-2期

关键词：

D O I：

10.1016/0304-8853(93)90163-V

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic hyperfine fields B(hf) near W(100)/Fe(100) and Fe(100)/Ag interfaces were analyzed with monolayer resolution by conversion electron Mossbauer spectroscopy (CEMS) in situ in UHV of epitaxial Fe(100) films on W(100), probed with Fe-57 monolayers. Strongly reduced values of B(hf) near W(100) can be explained using data from Fe/W alloys; a spatial oscillation of B(hf) is observed for this interface. Spin-wave parameters in the first monolayer are enhanced by a factor of 2.6 in the Fe/W and by a factor of 3.1 in the Fe/Ag interface, respectively, indicating a moderate reduction of exchange in this interface. A previously reported large reduction in exchange interactions in the free interface could not be confirmed. In the first monolayer below Ag, two components of Fe are observed with different hyperfine fields.

引用

页码：99 / 109

页数：11

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