TY - GEN
T1 - Crystallization mechanism in films along GeTe-SbTe pseudo-binary line
AU - Morales-Sanchez, E.
AU - Prokhorov, E.
AU - Muñoz Salas, J. A.
AU - González-Hernández, J.
AU - Trapaga, G.
PY - 2009
Y1 - 2009
N2 - The aim of this work is to compare the isothermal crystallization kinetic in the films along GeTe-Sb2Te3 line with composition Ge2Sb2Te5, Ge1Sb2Te 4, Ge1Sb4Te7 and Ge 4Sb1Te5 using mainly Johnson-Mehl-Avrami- Kolmogorov (JMAK) model. Results obtained have shown different crystallization mechanism in the investigated films. In Ge2Sb2Te 5 and Ge1Sb2Te4 films the analysis of the kinetic results (Avrani coefficient) showed that at the beginning of crystallization a metastable phase appeared with the Ge1Sb 4Te7 composition, this is followed by the nucleation and growth of the stable fcc phase up to full crystallization. In contrast Ge 4Sb1Te5 and Ge1Sb4Te 7 films show diffusion control growing from small dimension grains with decreasing nucleation rate.
AB - The aim of this work is to compare the isothermal crystallization kinetic in the films along GeTe-Sb2Te3 line with composition Ge2Sb2Te5, Ge1Sb2Te 4, Ge1Sb4Te7 and Ge 4Sb1Te5 using mainly Johnson-Mehl-Avrami- Kolmogorov (JMAK) model. Results obtained have shown different crystallization mechanism in the investigated films. In Ge2Sb2Te 5 and Ge1Sb2Te4 films the analysis of the kinetic results (Avrani coefficient) showed that at the beginning of crystallization a metastable phase appeared with the Ge1Sb 4Te7 composition, this is followed by the nucleation and growth of the stable fcc phase up to full crystallization. In contrast Ge 4Sb1Te5 and Ge1Sb4Te 7 films show diffusion control growing from small dimension grains with decreasing nucleation rate.
KW - Crystallization
KW - Growth phase
KW - Nucleation
UR - http://www.scopus.com/inward/record.url?scp=77949814664&partnerID=8YFLogxK
U2 - 10.1109/ICEEE.2009.5393373
DO - 10.1109/ICEEE.2009.5393373
M3 - Contribución a la conferencia
AN - SCOPUS:77949814664
SN - 9781424446896
T3 - 2009 6th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2009
BT - 2009 6th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2009
T2 - 2009 6th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2009
Y2 - 10 November 2009 through 13 November 2009
ER -