Observation of enhanced exchange bias behaviour in NiCoMnSb Heusler alloys

  title={Observation of enhanced exchange bias behaviour in NiCoMnSb Heusler alloys},
  author={Ajaya K. Nayak and K. G. Suresh and Arun Kumar Nigam},
  journal={Journal of Physics D},
We report the observation of large exchange bias (EB) in Ni50−xCoxMn38Sb12 Heusler alloys with x = 0, 2, 3, 4, 5, which is attributed to the coexistence of ferromagnetic (FM) and antiferromagnetic (AFM) phases in the martensitic phase. The phase coexistence is possibly due to the supercooling of the high temperature FM phase and the predominant AFM component in the martensitic phase. The presence of EB is well supported by the observation of the training effect. The EB field increases with Co… Expand
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