Vibrational studies of the short range order in a-GexSe1-xfilms
- 24 November 1984
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 17 (33) , 6027-6033
- https://doi.org/10.1088/0022-3719/17/33/013
Abstract
Raman and far-infrared (FIR) measurements have been made on a series of amorphous GexSe1-x alloys with 0.20-1 is consistent with that predicted by a network of fourfold-(twofold-) coordinated Ge(Se) atoms, with heteropolar bonds favoured over homopolar bonds. Some evidence for intermediate-range order has also been found; in particular it would appear that in a-GeSe (x=1/2) the density of GeSe4 tetrahedra exceeds that predicted by a random-network model.Keywords
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