This title appears in the Scientific Report :
2017
Please use the identifier:
http://dx.doi.org/10.1126/science.aaq0476 in citations.
Speeding up crystallization
Speeding up crystallization
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 polycrystall...
| Personal Name(s): | Akola, Jaakko (Corresponding author) |
|---|---|
| Jones, R. O. | |
| Contributing Institute: |
Quanten-Theorie der Materialien; IAS-1 JARA - HPC; JARA-HPC JARA-FIT; JARA-FIT Quanten-Theorie der Materialien; PGI-1 |
| Published in: | Science, 358 (2017) 6369, S. 1386 - 1386 |
| Imprint: |
Washington, DC [u.a.]
American Association for the Advancement of Science64196
2017
|
| DOI: |
10.1126/science.aaq0476 |
| PubMed ID: |
29242333 |
| Document Type: |
Journal Article |
| Research Program: |
Density functional calculations with molecular dynamics -- amorphous and crystalline materials Controlling Configuration-Based Phenomena Controlling Spin-Based Phenomena |
| Publikationsportal JuSER |
|
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. |