期刊
APPLIED PHYSICS LETTERS
卷 103, 期 4, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4816660
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- AFOSR [FA9550-09-1-0688]
- Voltaix Corporation [12A01464]
Single crystal epitaxial Ge1-xSnx alloys with atomic fractions of tin up to x=0.145 were grown by solid source molecular beam epitaxy on Ge (001) substrates. The Ge1-xSnx alloys formed high quality, coherent, strained layers at growth temperatures below 250 degrees C, as shown by high resolution X-ray diffraction. The amount of Sn that was on lattice sites, as determined by Rutherford backscattering spectrometry channeling, was found to be above 90% substitutional in all alloys. The degree of strain and the dependence of the effective unstrained bulk lattice constant of Ge1-xSnx alloys versus the composition of Sn have been determined. (C) 2013 AIP Publishing LLC.
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