Systematic materials design for phase-change memory with small density changes for high-endurance non-volatile memory applications

Yuta Saito, Shogo Hatayama, Yi Shuang, Satoshi Shindo, Paul Fons, Alexander V. Kolobov, Keisuke Kobayashi, Yuji Sutou

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The optical properties of transition-metal-based ternary tellurides have been systematically examined by density functional theory simulations. Based on an empirical law, which correlates density change with the optical contrast between the amorphous and crystalline phases of chalcogenides, the density changes occurring upon crystallization for hypothetical materials have been predicted. Cr2Ge2Te6 was found theoretically to be one of the best materials for phase-change memory applications owing to its small density change. This novel criterion will be useful in the screening of materials yet to be experimentally realized, and will help target promising materials for high-endurance phase-change memory applications.

Original languageEnglish
Article number051008
JournalApplied Physics Express
Volume12
Issue number5
DOIs
Publication statusPublished - 2019 May 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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