Record Details

Title:
Femtosecond x-ray diffraction reveals a liquid–liquid phase transition in phase-change materials
Affiliation(s):
EuXFEL staff, Other
Author group:
Instrument FXE
Topic:
Scientific area:
Abstract:
Phase-change materials are important for computer memory. They can quickly switch from glassy to crystalline using a thermal pulse and then lock in that structure for a long time at lower temperature. Zalden et al. probed the underlying atomic structure of two phase-change materials during this switching using ultrafast x-rays and simulations (see the Perspective by Rao et al.). A liquid-liquid phase transition in both materials allowed fast switching at high temperatures. The lower-temperature glass locks in the structure, allowing for long-term memory storage.
Imprint:
2019
Journal Information:
Science, 364 (6445), 1062-1067 (2019)
Related external records:
Language(s):
English


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 Record created 2019-07-18, last modified 2019-07-18

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