Asymmetric magnetoresistance in bulk In-based off-stoichiometric Heusler alloysстатья
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Дата последнего поиска статьи во внешних источниках: 5 декабря 2014 г.
Аннотация:It 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 spinvalve-
like MR in Ni50Mn35In14B, and its relation to structural,
magnetic, and magnetocaloric properties, has been
discussed