2008 5th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2008

E. Morales-Sánchez, M. A. Hernández-Landaverde, E. Prokhorov, G. Trapaga, J. González-Hernández

Research output: Contribution to conferencePaperResearch

Abstract

The aim of this work is to investigate the amorphous-to-crystalline phase transformation process in Ge 2 Sb 2 Te 5 ternary alloys. The experiments were carried out using impedance and X-ray diffraction measurements. The results have shown that the crystallization process in an amorphous Ge 2 Sb 2 Te 5 alloy starts from nuclei, which appear below Tc and which were identified as the crystalline Ge 1 Sb 4 Te 7 . As the temperature increases above Tc these nuclei were transformed into fcc-Ge 2 Sb 2 Te 5 crystals. In order to establish the mechanism of crystallization for this system, the Brugerman effective medium approximation was implemented to analyze nucleation and growth of the two stage involved (i.e., metastable Get Sb 4 Te 7 and stable Ge 2 Sb 2 Te 5 ) through impedance measurements. The results of the simulations demonstrate a close agreement with experimental ones showing that phase transformation in Ge 2 Sb 2 Te 5 is carried in two steps. © 2008 IEEE.
Original languageAmerican English
Pages475-477
Number of pages3
DOIs
StatePublished - 1 Dec 2008
Externally publishedYes
Eventconference -
Duration: 1 Dec 2008 → …

Conference

Conferenceconference
Period1/12/08 → …

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electrical engineering
automatic control
phase transformations
crystallization
nuclei
ternary alloys
impedance measurement
nucleation
impedance
approximation
diffraction
crystals
x rays
simulation
temperature

Cite this

Morales-Sánchez, E., Hernández-Landaverde, M. A., Prokhorov, E., Trapaga, G., & González-Hernández, J. (2008). 2008 5th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2008. 475-477. Paper presented at conference, . https://doi.org/10.1109/ICEEE.2008.4723365
Morales-Sánchez, E. ; Hernández-Landaverde, M. A. ; Prokhorov, E. ; Trapaga, G. ; González-Hernández, J. / 2008 5th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2008. Paper presented at conference, .3 p.
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abstract = "The aim of this work is to investigate the amorphous-to-crystalline phase transformation process in Ge 2 Sb 2 Te 5 ternary alloys. The experiments were carried out using impedance and X-ray diffraction measurements. The results have shown that the crystallization process in an amorphous Ge 2 Sb 2 Te 5 alloy starts from nuclei, which appear below Tc and which were identified as the crystalline Ge 1 Sb 4 Te 7 . As the temperature increases above Tc these nuclei were transformed into fcc-Ge 2 Sb 2 Te 5 crystals. In order to establish the mechanism of crystallization for this system, the Brugerman effective medium approximation was implemented to analyze nucleation and growth of the two stage involved (i.e., metastable Get Sb 4 Te 7 and stable Ge 2 Sb 2 Te 5 ) through impedance measurements. The results of the simulations demonstrate a close agreement with experimental ones showing that phase transformation in Ge 2 Sb 2 Te 5 is carried in two steps. {\circledC} 2008 IEEE.",
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Morales-Sánchez, E, Hernández-Landaverde, MA, Prokhorov, E, Trapaga, G & González-Hernández, J 2008, '2008 5th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2008' Paper presented at conference, 1/12/08, pp. 475-477. https://doi.org/10.1109/ICEEE.2008.4723365

2008 5th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2008. / Morales-Sánchez, E.; Hernández-Landaverde, M. A.; Prokhorov, E.; Trapaga, G.; González-Hernández, J.

2008. 475-477 Paper presented at conference, .

Research output: Contribution to conferencePaperResearch

TY - CONF

T1 - 2008 5th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2008

AU - Morales-Sánchez, E.

AU - Hernández-Landaverde, M. A.

AU - Prokhorov, E.

AU - Trapaga, G.

AU - González-Hernández, J.

PY - 2008/12/1

Y1 - 2008/12/1

N2 - The aim of this work is to investigate the amorphous-to-crystalline phase transformation process in Ge 2 Sb 2 Te 5 ternary alloys. The experiments were carried out using impedance and X-ray diffraction measurements. The results have shown that the crystallization process in an amorphous Ge 2 Sb 2 Te 5 alloy starts from nuclei, which appear below Tc and which were identified as the crystalline Ge 1 Sb 4 Te 7 . As the temperature increases above Tc these nuclei were transformed into fcc-Ge 2 Sb 2 Te 5 crystals. In order to establish the mechanism of crystallization for this system, the Brugerman effective medium approximation was implemented to analyze nucleation and growth of the two stage involved (i.e., metastable Get Sb 4 Te 7 and stable Ge 2 Sb 2 Te 5 ) through impedance measurements. The results of the simulations demonstrate a close agreement with experimental ones showing that phase transformation in Ge 2 Sb 2 Te 5 is carried in two steps. © 2008 IEEE.

AB - The aim of this work is to investigate the amorphous-to-crystalline phase transformation process in Ge 2 Sb 2 Te 5 ternary alloys. The experiments were carried out using impedance and X-ray diffraction measurements. The results have shown that the crystallization process in an amorphous Ge 2 Sb 2 Te 5 alloy starts from nuclei, which appear below Tc and which were identified as the crystalline Ge 1 Sb 4 Te 7 . As the temperature increases above Tc these nuclei were transformed into fcc-Ge 2 Sb 2 Te 5 crystals. In order to establish the mechanism of crystallization for this system, the Brugerman effective medium approximation was implemented to analyze nucleation and growth of the two stage involved (i.e., metastable Get Sb 4 Te 7 and stable Ge 2 Sb 2 Te 5 ) through impedance measurements. The results of the simulations demonstrate a close agreement with experimental ones showing that phase transformation in Ge 2 Sb 2 Te 5 is carried in two steps. © 2008 IEEE.

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Morales-Sánchez E, Hernández-Landaverde MA, Prokhorov E, Trapaga G, González-Hernández J. 2008 5th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2008. 2008. Paper presented at conference, . https://doi.org/10.1109/ICEEE.2008.4723365