Martensitic phase transformation in single crystal Co 5 Ni 2 Ga 3

Peng Chen*, Ke Chen, Guang Heng Wu, Xixiang Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The magnetic, thermal, and transport properties of martensitic phase transformation in single crystal Co 5 Ni 2 Ga 3 have been investigated. The single crystal Co 5 Ni 2 Ga 3 shows martensitic transformation at 251 K on cooling and 254 K on warming. Large jumps in the temperature-dependent resistance curve, temperature-dependent magnetization curve, and temperature-dependent thermal conductivity curve are observed at martensitic transformation temperature (T M ). Negative magnetoresistance due to spin disorder scattering was observed in Co 5 Ni 2 Ga 3 single crystal at all temperature range. The temperature-dependent negative magnetoresistance shows a peak at T M , which indicates that the spin disorder increases in the process of phase transition. Co 5 Ni 2 Ga 3 sample exhibits a temperature dependence of thermal conductivity κ(T) (dκ/dT > 0) due to electrons being above temperature 100 K.

Original languageEnglish (US)
Pages (from-to)4226-4229
Number of pages4
JournalJournal of Materials Science
Volume43
Issue number12
DOIs
StatePublished - Jun 1 2008

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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