Journal Article

FZJ-2017-08479

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Speeding up crystallization

Akola, J. (Corresponding author) ; Jones, R. O.FZJ*

2017
American Association for the Advancement of Science64196 Washington, DC [u.a.]

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Please use a persistent id in citations: doi:10.1126/science.aaq0476

Abstract: Phase-change materials (PCMs) form the basis of many modern optical-storage media (such as DVDs) and promise to yield faster, more stable random-access memory (RAM) devices for computers. All of these devices are based on the fast and reversible crystallization of amorphous bits in thin polycrystalline alloy layers, with crystallization being the time-limiting stage. Optimization of the alloy composition for faster crystallization is a major challenge in speeding up this process. On page 1423 of this issue, Rao et al. (1) take full advantage of atomic-level knowledge of the structure and crystallization properties of PCMs from simulations to develop a new alloy with greatly reduced nucleation times and demonstrate subnanosecond crystallization in a PCM device based on this alloy.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IAS-1)
2. Quanten-Theorie der Materialien (PGI-1)
3. JARA-FIT (JARA-FIT)
4. JARA - HPC (JARA-HPC)

Research Program(s):

1. 142 - Controlling Spin-Based Phenomena (POF3-142) (POF3-142)
2. 143 - Controlling Configuration-Based Phenomena (POF3-143) (POF3-143)
3. Density functional calculations with molecular dynamics -- amorphous and crystalline materials (jiff05_20170501) (jiff05_20170501)

Appears in the scientific report 2017

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