GdFe2 alloy formation observed by STM

被引：0
|
作者：
Getzlaff, M. [1 ]
Pascal, R. [1 ]
Tödter, H. [1 ]
Bode, M. [1 ]
Wiesendanger, R. [1 ]
机构：
[1] Inst. Appl. Phys. Microstructure R., University of Hamburg, Jungiusstrasse 11, D-20355 Hamburg, Germany
来源：
Applied Surface Science | 1999年 / 142卷 / 01期
关键词：
Crystal structure - Crystallography - Epitaxial growth - Gadolinium alloys - Low energy electron diffraction - Morphology - Scanning tunneling microscopy - Surface structure - Tungsten - Ultrathin films - Vacuum applications;
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摘要：
Ultra thin films of an alloy consisting of Gd and Fe were prepared under ultra high vacuum conditions on top of a W(110) surface. The films were characterized using scanning tunneling microscopy and low energy electron diffraction. We succeeded in preparing the initial stages of well ordered GdFe2 films. Basing on atomically resolved STM images and LEED studies, a structure model for the thin GdFe2 films was deduced. The crystallographic structure of the first and second ML GdFe2 on W(110) was found to be different from the bulk structure (Laves phase C15).
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页码：543 / 548
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