TY - JOUR
T1 - Pressure-induced site-selective disordering of Ge2Sb2Te5
T2 - A new insight into phase-change optical recording
AU - Kolobov, A. V.
AU - Haines, J.
AU - Pradel, A.
AU - Ribes, M.
AU - Fons, P.
AU - Tominaga, J.
AU - Katayama, Y.
AU - Hammouda, T.
AU - Uruga, T.
PY - 2006
Y1 - 2006
N2 - We demonstrate that Ge2Sb2Te5, the material of choice in phase-change optical recording (such as DVD-RAM), can be rendered amorphous by the application of hydrostatic pressure. It is argued that this structural change is due to a very strong second-nearest-neighbor Te-Te interaction that determines the long-range order in the metastable cubic phase of Ge2Sb2Te5 and also to the presence of vacancies. This newly discovered phenomenon suggests that pressure is an important factor for the formation of the amorphous phase which opens new insight into the mechanism of phase-change optical recording.
AB - We demonstrate that Ge2Sb2Te5, the material of choice in phase-change optical recording (such as DVD-RAM), can be rendered amorphous by the application of hydrostatic pressure. It is argued that this structural change is due to a very strong second-nearest-neighbor Te-Te interaction that determines the long-range order in the metastable cubic phase of Ge2Sb2Te5 and also to the presence of vacancies. This newly discovered phenomenon suggests that pressure is an important factor for the formation of the amorphous phase which opens new insight into the mechanism of phase-change optical recording.
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U2 - 10.1103/PhysRevLett.97.035701
DO - 10.1103/PhysRevLett.97.035701
M3 - Article
AN - SCOPUS:33746265265
VL - 97
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 3
M1 - 035701
ER -