Crystallization mechanism and kinetics of Cr2Ge2Te6 phase change material

S. Hatayama, Y. Sutou, D. Ando, J. Koike

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5 Citations (Scopus)

Abstract

The crystallization mechanism and kinetics of Cr2Ge2Te6 (CrGT) films were investigated by differential scanning calorimetry. The average Avrami exponent (na) analysis indicated that CrGT exhibits a growth-dominant crystallization in the range of heating rate (β) of 10-50°C/min. In comparison, Ge2Sb2Te5 (GST) showed a nucleation-dominant crystallization. The na of CrGT was about 3, and was majorly independent of β. The na of GST decreased with an increasing β, which asymptotically approached a value of around 3. The kinetic constant of CrGT was evaluated to be almost the same with that of GST, indicating that CrGT undergoes fast crystallization.

Original languageEnglish
Pages (from-to)1167-1172
Number of pages6
JournalMRS Communications
Volume8
Issue number3
DOIs
Publication statusPublished - 2018 Sep 1

ASJC Scopus subject areas

  • Materials Science(all)

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