Abstract
AbstractIt has been found that Ni50Mn35In14B exhibits with increasing temperature a first‐order magnetostructural phase transition from a low‐magnetization martensitic phase to a high‐temperature ferromagnetic austenitic phase at TM∼315 K as observed from magnetization M(T) curves with H=0.05 T. A shift in TM of about 12 K towards lower temperatures has been detected under application of a 5T magnetic field. An asymmetric magnetoresistance (spin‐valve‐like behavior) has been observed in the vicinity of TM at 304 K after the initial application of magnetic field that could be related to the kinetic arrest and de‐arrest of a fractional austenite phase in the vicinity of phase co‐existence. A possible origin of a spin‐valve‐like MR in Ni50Mn35In14B, and its relation to structural, magnetic, and magnetocaloric properties, has been discussed. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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