Pressure-induced structural transitions in phase-change materials based on Ge-free Sb-Te alloys

Milos Krbal; A. V. Kolobov; P. Fons; J. Haines; A. Pradel; M. Ribes; A. A. Piarristeguy; C. Levelut; R. Le Parc; V. Agafonov; M. Hanfland; J. Tominaga

doi:10.1103/PhysRevB.83.024105

Pressure-induced structural transitions in phase-change materials based on Ge-free Sb-Te alloys

Milos Krbal, A. V. Kolobov, P. Fons, J. Haines, A. Pradel, M. Ribes, A. A. Piarristeguy, C. Levelut, R. Le Parc, V. Agafonov, M. Hanfland, J. Tominaga

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

We report on pressure-induced phase transitions in the Sb₂Te and Ag₁₁In₆Sb₅₅Te₂₈ (AIST) phase change alloys used in optical recording media over a pressure range from ambient pressure to 40 GPa. The results clearly demonstrate the crucial role of dopants in sequences of high-pressure structural transformations and in the degree of reversion. We also demonstrate that prolonged exposure of AIST to high pressures leads to an additional phase transition that may have fatal consequences for process reversibility in repeated compression/decompression cycles.

Original language	English
Article number	024105
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	83
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.83.024105
Publication status	Published - 2011 Jan 27
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.83.024105

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Krbal, M., Kolobov, A. V., Fons, P., Haines, J., Pradel, A., Ribes, M., Piarristeguy, A. A., Levelut, C., Le Parc, R., Agafonov, V., Hanfland, M., & Tominaga, J. (2011). Pressure-induced structural transitions in phase-change materials based on Ge-free Sb-Te alloys. Physical Review B - Condensed Matter and Materials Physics, 83(2), [024105]. https://doi.org/10.1103/PhysRevB.83.024105

Krbal, M, Kolobov, AV, Fons, P, Haines, J, Pradel, A, Ribes, M, Piarristeguy, AA, Levelut, C, Le Parc, R, Agafonov, V, Hanfland, M & Tominaga, J 2011, 'Pressure-induced structural transitions in phase-change materials based on Ge-free Sb-Te alloys', Physical Review B - Condensed Matter and Materials Physics, vol. 83, no. 2, 024105. https://doi.org/10.1103/PhysRevB.83.024105

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abstract = "We report on pressure-induced phase transitions in the Sb2Te and Ag11In6Sb55Te28 (AIST) phase change alloys used in optical recording media over a pressure range from ambient pressure to 40 GPa. The results clearly demonstrate the crucial role of dopants in sequences of high-pressure structural transformations and in the degree of reversion. We also demonstrate that prolonged exposure of AIST to high pressures leads to an additional phase transition that may have fatal consequences for process reversibility in repeated compression/decompression cycles.",

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AU - Krbal, Milos

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AU - Fons, P.

AU - Haines, J.

AU - Pradel, A.

AU - Ribes, M.

AU - Piarristeguy, A. A.

AU - Levelut, C.

AU - Le Parc, R.

AU - Agafonov, V.

AU - Hanfland, M.

AU - Tominaga, J.

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Pressure-induced structural transitions in phase-change materials based on Ge-free Sb-Te alloys

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