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We studied the structural and electrical properties of crystallized a-Si x Ge 1-x alloys with 0=<x=<1 on (100) GaAs substrates. Raman spectroscopy on laser crystallized films shows the Si-Si, Ge-Ge, and Si-Ge vibrations characteristic of crystalline Si x Ge 1-x alloys. The Raman polarization selection rules indicate that, while Si x ...
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