2026-06-30T16:56:50Z https://archive.materialscloud.org/oai2d

oai:materialscloud.org:836 2021-04-29T00:16:20Z openaire_data community-mcarchive

Zhao, Jin Song, Wen-Xiong Song, Zhitang Zhao, Jin Song, Wen-Xiong Xin, Tianjiao Song, Zhitang 2021-04-29 While alloy design has practically shown an efficient strategy to mediate two seemingly conflicted performances of writing speed and data retention in phase-change memory, the detailed kinetic pathway of alloy-tuned crystallization is still unclear. Here, we propose hierarchical melt and coordinate bond strategies to solve them, where the former stabilizes a medium-range crystal-like region and the latter provides a rule to stabilize amorphous. The Er0.52Sb2Te3 compound we designed achieves writing speed of 3.2 ns and ten-year data retention of 161 °C. We provide a direct atomic-level evidence that two neighbor Er atoms stabilize a medium-range crystal-like region, acting as a precursor to accelerate crystallization; meanwhile, the essential reason of stabilization originates from the formation of coordinate bonds by sharing lone-pair electrons of chalcogenide atoms with the empty 5d orbitals of Er atoms. The two rules pave the way for the development of storage-class memory with excellent comprehensive performance to achieve next revolutionary technology node. application/zip text/markdown https://doi.org/10.24435/materialscloud:cs-2a oai:materialscloud.org:836 mcid:2021.67 eng Materials Cloud https://doi.org/10.1038/s41467-021-26696-9 https://archive.materialscloud.org/communities/mcarchive https://doi.org/10.24435/materialscloud:6n-fe info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Er-Sb-Te Coordinate bond Hierarchical melt Phase change memory Experimental Designing crystallization to tune the performance of phase-change memory: rules of hierarchical melt and coordinate bond info:eu-repo/semantics/other