Temperature independence of pressure-induced amorphization of the phase-change memory alloy Ge2 Sb2 Te5

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

doi:10.1063/1.2956409

Temperature independence of pressure-induced amorphization of the phase-change memory alloy Ge2 Sb2 Te5

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

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

33 Citations (Scopus)

Abstract

In the temperature range from room temperature to about 150 °C, the prototypic phase-change material Ge2 Sb2 Te5 becomes amorphous upon hydrostatic compression. In the studied temperature range, the onset of amorphization is at about 15 GPa and the material completely amorphizes at 25 GPa; these values do not depend on temperature. Upon decompression, the amorphous phase is stable at lower temperatures, yet at higher temperatures (145 °C), the initial fcc phase is recovered upon decompression. A possible mechanism of pressure-induced amorphization and its implications for phase-change memories are discussed.

Original language	English
Article number	031918
Journal	Applied Physics Letters
Volume	93
Issue number	3
DOIs	https://doi.org/10.1063/1.2956409
Publication status	Published - 2008
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2956409

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title = "Temperature independence of pressure-induced amorphization of the phase-change memory alloy Ge2 Sb2 Te5",

abstract = "In the temperature range from room temperature to about 150 °C, the prototypic phase-change material Ge2 Sb2 Te5 becomes amorphous upon hydrostatic compression. In the studied temperature range, the onset of amorphization is at about 15 GPa and the material completely amorphizes at 25 GPa; these values do not depend on temperature. Upon decompression, the amorphous phase is stable at lower temperatures, yet at higher temperatures (145 °C), the initial fcc phase is recovered upon decompression. A possible mechanism of pressure-induced amorphization and its implications for phase-change memories are discussed.",

author = "M. Krbal and Kolobov, {A. V.} and J. Haines and A. Pradel and M. Ribes and P. Fons and J. Tominaga and C. Levelut and {Le Parc}, R. and M. Hanfland",

note = "Funding Information: The experiment has been carried out at ESRF as part of HS-3253 proposal. The authors, especially M.K., are grateful to “Agence Nationale pour la recherche” for financial support (Project Chalmemstory ANR-05-BLAN-0058-01). ",

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doi = "10.1063/1.2956409",

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volume = "93",

journal = "Applied Physics Letters",

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publisher = "American Institute of Physics Publising LLC",

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T1 - Temperature independence of pressure-induced amorphization of the phase-change memory alloy Ge2 Sb2 Te5

AU - Krbal, M.

AU - Kolobov, A. V.

AU - Haines, J.

AU - Pradel, A.

AU - Ribes, M.

AU - Fons, P.

AU - Tominaga, J.

AU - Levelut, C.

AU - Le Parc, R.

AU - Hanfland, M.

N1 - Funding Information: The experiment has been carried out at ESRF as part of HS-3253 proposal. The authors, especially M.K., are grateful to “Agence Nationale pour la recherche” for financial support (Project Chalmemstory ANR-05-BLAN-0058-01).

PY - 2008

Y1 - 2008

N2 - In the temperature range from room temperature to about 150 °C, the prototypic phase-change material Ge2 Sb2 Te5 becomes amorphous upon hydrostatic compression. In the studied temperature range, the onset of amorphization is at about 15 GPa and the material completely amorphizes at 25 GPa; these values do not depend on temperature. Upon decompression, the amorphous phase is stable at lower temperatures, yet at higher temperatures (145 °C), the initial fcc phase is recovered upon decompression. A possible mechanism of pressure-induced amorphization and its implications for phase-change memories are discussed.

AB - In the temperature range from room temperature to about 150 °C, the prototypic phase-change material Ge2 Sb2 Te5 becomes amorphous upon hydrostatic compression. In the studied temperature range, the onset of amorphization is at about 15 GPa and the material completely amorphizes at 25 GPa; these values do not depend on temperature. Upon decompression, the amorphous phase is stable at lower temperatures, yet at higher temperatures (145 °C), the initial fcc phase is recovered upon decompression. A possible mechanism of pressure-induced amorphization and its implications for phase-change memories are discussed.

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Temperature independence of pressure-induced amorphization of the phase-change memory alloy Ge2 Sb2 Te5

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