Order-disorder transition of vacancies from the full- to the half-Heusler structure in Ni2-xMnSb alloys

M. Nagasako, Y. Taguchi, T. Miyamoto, T. Kanomata, K. R.A. Ziebeck, R. Kainuma

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The thermal transformations and crystal structures in the ordered bcc phases appearing in Ni2-xMnSb alloys have been investigated. Thermo-analyses on NiMnSb(x = 1) show three λ-shaped peaks suggesting a magnetic and chemical ordering transitions at approximately 450, 865 and 965 °C. With decreasing x, the first and second peak temperatures gradually decrease, while the third one increases. By Z-contrast imaging technique, it was confirmed that the second peak corresponds to the order-disorder transition of vacancies from the L21 to the C1b structure.

Original languageEnglish
Pages (from-to)38-41
Number of pages4
JournalIntermetallics
Volume61
DOIs
Publication statusPublished - 2015 Jun

Keywords

  • A. Magnetic intermetallics
  • B. Order/disorder transformation
  • D. Point defect
  • D. Site occupancy
  • F. Differential scanning calorimetry
  • F. Electron microscopy transmission

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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