Open Access
Structural changes in doped Ge2 Sb2 Te5 thin films studied by Raman spectroscopy
Тип публикации: Journal Article
Дата публикации: 2013-05-24
General Engineering
Краткое описание
In this study, we investigated Ge 2 Sb 2 Te 5 (GST225) amorphous thin films doped with Bi, Sn and In, using Raman scattering spectroscopy, to obtain information about structural changes after doping. Such impurities as Bi and Sn were chosen due to their isomorphism with one of the main components; indium is an active dopant for phase change materials. Two main, most intensive bands appeared at 125 and 153 cm −1 in the spectrum of undoped amorphous GST225 thin film. Additional small bands in the range of 80 cm −1 and near 300 cm −1 , which disappeared in Raman spectra of crystalline GST225 thin films, were also observed. The obtained peak parameters were found to correlate with the dopant type and concentration. The concentration dependencies are not monotonic, and this fact indicates different incorporation mechanisms for different dopant levels.
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Kozyukhin S. A. et al. Structural changes in doped Ge2Sb2Te5 thin films studied by Raman spectroscopy // Physics Procedia. 2013. Vol. 44. pp. 82-90.
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Kozyukhin S. A., Veres M., Nguyen H. D., Ingram A., Kudoyarova V. Structural changes in doped Ge2Sb2Te5 thin films studied by Raman spectroscopy // Physics Procedia. 2013. Vol. 44. pp. 82-90.
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TY - JOUR
DO - 10.1016/j.phpro.2013.04.011
UR - https://doi.org/10.1016/j.phpro.2013.04.011
TI - Structural changes in doped Ge2Sb2Te5 thin films studied by Raman spectroscopy
T2 - Physics Procedia
AU - Kozyukhin, Sergey A.
AU - Veres, Miklós
AU - Nguyen, Hung D.
AU - Ingram, A
AU - Kudoyarova, V
PY - 2013
DA - 2013/05/24
PB - Elsevier
SP - 82-90
VL - 44
SN - 1875-3892
SN - 1875-3884
ER -
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@article{2013_Kozyukhin,
author = {Sergey A. Kozyukhin and Miklós Veres and Hung D. Nguyen and A Ingram and V Kudoyarova},
title = {Structural changes in doped Ge2Sb2Te5 thin films studied by Raman spectroscopy},
journal = {Physics Procedia},
year = {2013},
volume = {44},
publisher = {Elsevier},
month = {may},
url = {https://doi.org/10.1016/j.phpro.2013.04.011},
pages = {82--90},
doi = {10.1016/j.phpro.2013.04.011}
}
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