Investigation on phase change behaviors of Si-Sb-Te alloy: The effect of tellurium segregation

  • Xilin Zhou*
  • , Liangcai Wu
  • , Zhitang Song
  • , Feng Rao
  • , Kun Ren
  • , Yan Cheng
  • , Bo Liu
  • , Dongning Yao
  • , Songlin Feng
  • , Bomy Chen
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this study, novel Si 2Sb 2Te 6 phase change material is investigated in detail for the phase change memory application using transmission electron microscopy and X-ray photoelectron spectroscopy. The phenomenon that Te diffuses to the film surface during phase switching and successively evaporates out has been confirmed. The phase change memory cells employing Si 2Sb 2Te 6 and Si 3Sb 2Te 3 materials are fabricated and programmed. For the Si 2Sb 2Te 6-based cell a data endurance of 5×10 5 cycles is achieved with a failure mode resembling reset stuck, which can be attributed to the migration of Tellurium during the operation cycles. It means that a thermally stable material system of Si xSb 2Te 3 is preferred for the PCM applications.

Original languageEnglish
Title of host publicationNew Functional Materials and Emerging Device Architectures for Nonvolatile Memories
Pages123-128
Number of pages6
DOIs
StatePublished - 2011
Externally publishedYes
Event2011 MRS Spring Meeting - San Francisco, CA, United States
Duration: 25 Apr 201129 Apr 2011

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1337
ISSN (Print)0272-9172

Conference

Conference2011 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA
Period25/04/1129/04/11

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