Pressure-induced site-selective disordering of Ge2Sb2Te5: A new insight into phase-change optical recording

A. V. Kolobov, J. Haines, A. Pradel, M. Ribes, P. Fons, J. Tominaga, Y. Katayama, T. Hammouda, T. Uruga

研究成果: Article査読

99 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号035701
ジャーナルPhysical review letters
97
3
DOI
出版ステータスPublished - 2006
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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