High performance Al3Sc alloy doped Al3Sc-Sb2Te chalcogenides for phase change 
memory application

Zhang, Sifan; Wu, Liangcai; Song, Wenxiong; Zhou, Xilin; Song, Zhitang; Shi, Jianjun; Zhang, Jjing; Feng, Songlin

doi:10.1039/C8TC00590G

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

High performance Al₃Sc alloy doped Al₃Sc-Sb₂Te chalcogenides for phase change memory application

MPS-Authors

Zhou, Xilin
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

External Resource

https://doi.org/10.1039/C8TC00590G
(Publisher version)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Zhang, S., Wu, L., Song, W., Zhou, X., Song, Z., Shi, J., et al. (2018). High performance Al₃Sc alloy doped Al₃Sc-Sb₂Te chalcogenides for phase change memory application. Journal of Materials Chemistry C, 6, 4177-4182. doi:10.1039/C8TC00590G.

Cite as: https://hdl.handle.net/21.11116/0000-0009-273A-B

Abstract

An Al₃Sc alloy doped Al₃Sc–Sb₂Te chalcogenide was put forward to avoid oxidation of pure Sc and enhance data retention ability. Compared with conventional Ge₂Sb₂Te₅ and Sc-doped Sc_0.2Sb₂Te₃ materials, the Al₃Sc alloy doped Al₃Sc–Sb₂Te chalcogenide has much better thermal stability and data retention. X-ray diffraction and transmission electron microscopy analysis reveal that the structure of Al₃Sc–Sb₂Te has no obvious change compared with Sb₂Te, except for the refined grain size. The Al₃Sc–Sb₂Te based device shows excellent reversible SET–RESET properties with a suitable operation window and a low power consumption of 1.38 × 10^-11 J. In addition, a good cyclability of 1 × 10⁶ cycles can be obtained with a large resistance ratio of about 102. Our calculations reveal that Al and Sc atoms prefer bonding with Te atoms. These stable local patterns stabilize glassy states and result in high stability.