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Structural Changes in Doped Ge2Sb2Te5 Thin Films Studied by Raman Spectroscopy

✍ Scribed by Kozyukhin, S.; Veres, M.; Nguyen, H.P.; Ingram, A.; Kudoyarova, V.

Book ID
121526435
Publisher
Elsevier
Year
2013
Tongue
English
Weight
339 KB
Volume
44
Category
Article
ISSN
1875-3892

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## Abstract Optical absorption spectra of post‐annealed Ge~2~Sb~2~Te~5~ films were measured in the photon energy range from 0.5 to 3.5 eV. Optical absorption edge and Urbach slope parameter changed slightly with increase in annealing temperature and then abrupt changes occurred at around crystalliz