期刊
APPLIED PHYSICS LETTERS
卷 97, 期 18, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3514242
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资金
- NUS Graduate School for Integrative Sciences and Engineering (NGS)
- National Research Foundation (NRF) [NRF-RF2008-09]
Epitaxial nickel digermanide (NiGe2), a metastable phase, was formed by laser annealing Ni on (100) germanium-on-silicon substrates. The NiGe2 formation was investigated using transmission electron microscopy, energy dispersive x-ray spectroscopy, x-ray diffraction, Rutherford backscattering spectroscopy, and first-principles calculations. The formation mechanism of NiGe2 is discussed and is attributed to both the reduced interfacial energy at the NiGe2/Ge (100) interface and the kinetic aspects of the laser annealing reaction associated with phase transformation and film agglomeration. (c) 2010 American Institute of Physics. [doi:10.1063/1.3514242]
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