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Faulted surface layers in dysprosium silicide nanowires
被引:23
|作者:
He, ZA
[1
]
Smith, DJ
Bennett, PA
机构:
[1] Arizona State Univ, Ctr Solid State Sci, Tempe, AZ 85287 USA
[2] Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA
基金:
美国国家科学基金会;
关键词:
D O I:
10.1103/PhysRevB.70.241402
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
The crystallography and microstructure of epitaxial dysprosium silicide nanowires on Si(001) have been studied using high-resolution transmission electron microscopy. Islands grown at 750 degreesC have a compact three-dimensional shape and are identified as hexagonal DySi2. Islands grown at 650 degreesC have an elongated nanowire (NW) shape. They contain one or two layers of hexagonal silicide at the buried interface and two to three surface layers with faulted stacking similar to tetragonal DySi2. The faulted layers are believed to provide stress relief during growth of the coherently strained NW islands.
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页码:1 / 4
页数:4
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