Revealing the nature of magnetic phases in the semi-Heusler alloy Cu0.85Ni0.15MnSb
arXiv:1603.08618 · doi:10.1016/j.jmmm.2014.08.003
Abstract
We report the magnetic, magnetocaloric, and magnetotransport properties of the semi-Heusler alloy Cu0.85Ni0.15MnSb, which exhibits coexistence of antiferromagnetic (AFM) and ferromagnetic (FM) phases. A broad magnetic phase transition is evident from the temperature variations of magnetization, heat capacity, and isothermal magnetic entropy change. This is due to the presence of both AFM and FM phases at low temperatures. The variation of electrical resistivity with temperature shows three distinct regions of magnetic phases. The magnetoresistance (MR) results also show the presence of AFM and FM phases at temperatures below 45 K, and a FM phase at temperature above 45K. Though there is no signature of a spin-glass state at low temperatures, various results point towards the presence of short-range magnetic correlations at low temperatures.
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References in corpus (6)
- Inverse magnetocaloric effect in ferromagnetic Ni-Mn-Sn alloys
- Origin and Properties of the Gap in the Half-Ferromagnetic Heusler Alloys
- Role of the conduction electrons in mediating exchange interactions in Heusler alloys
- Interface properties of the NiMnSb/InP and NiMnSb/GaAs contacts
- Crossover from antiferromagnetic to ferromagnetic ordering in semi-Heusler alloys Cu1-xNixMnSb with increasing Ni concentration
- Magnetocaloric effect and its implementation in critical behavior study of Mn4FeGe3-xSix intermetallic compounds