Journal of Materials Science

, Volume 43, Issue 12, pp 4226–4229 | Cite as

Martensitic phase transformation in single crystal Co5Ni2Ga3

  • Peng Chen
  • Ke Chen
  • Guang Heng Wu
  • Xi Xiang Zhang


The magnetic, thermal, and transport properties of martensitic phase transformation in single crystal Co5Ni2Ga3 have been investigated. The single crystal Co5Ni2Ga3 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 (TM). Negative magnetoresistance due to spin disorder scattering was observed in Co5Ni2Ga3 single crystal at all temperature range. The temperature-dependent negative magnetoresistance shows a peak at TM, which indicates that the spin disorder increases in the process of phase transition. Co5Ni2Ga3 sample exhibits a temperature dependence of thermal conductivity κ(T) (dκ/dT > 0) due to electrons being above temperature 100 K.


Austenite Martensite Applied Magnetic Field Heusler Alloy Martensitic Phase Transformation 



In this paper was supported by a grant from the Science & Technology Commission, Chongqing, China (Project No. CSTC 2006BB2024 and SWNUF 2005002). XX Zhang would like to thank the support from HKUST grant 6059/02E.


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Peng Chen
    • 1
  • Ke Chen
    • 2
  • Guang Heng Wu
    • 3
  • Xi Xiang Zhang
    • 4
  1. 1.Department of PhysicsSouthwest UniversityChongqingChina
  2. 2.Chongqing Electric Power CollegeChongqingChina
  3. 3.Beijing National Laboratory for Condensed Matter, Institute of PhysicsCASBeijingChina
  4. 4.Department of PhysicsHong Kong University of Science and TechnologyKowloonHong Kong, China

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