We report resistivity measurements as a function of magnetic field or uniaxial stress across the martensitic transformation on Ni45Co5Mn37.5In12.5 Heusler single crystal. The resistivity and transformation temperatures are strongly affected by the application of an uniaxial stress or a magnetic field and consequent magnetoresistance and piezoresistance that can reach up to 60% or 122%, respectively, are measured. This behavior opens up a large range of possible applications with a relatively small pressure or magnetic field as a control parameter to tune the resistivity.
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Research Article| April 13 2012
Large piezoresistance and magnetoresistance effects on Ni45Co5Mn37.5In12.5 single crystal
L. Porcar, D. Bourgault, P. Courtois; Large piezoresistance and magnetoresistance effects on Ni45Co5Mn37.5In12.5 single crystal. Appl. Phys. Lett. 9 April 2012; 100 (15): 152405. https://doi.org/10.1063/1.3701170
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