The effects of substituting Ag for In on the magnetoresistance and magnetocaloric properties of Ni-Mn-In Heusler alloys | Zendy

Sudip Pandey | Zendy; Abdiel Quetz | Zendy; Anil Aryal | Zendy; Igor Dubenko | Zendy; Tapas Samanta | Zendy; Dipanjan Mazumdar | Zendy; Shane Stadler | Zendy; Naushad Ali | Zendy

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The effects of substituting Ag for In on the magnetoresistance and magnetocaloric properties of Ni-Mn-In Heusler alloys

Author(s) -

Sudip Pandey,

Abdiel Quetz,

Anil Aryal,

Igor Dubenko,

Tapas Samanta,

Dipanjan Mazumdar,

Shane Stadler,

Naushad Ali

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4943763

Subject(s) - magnetic refrigeration , thermomagnetic convection , magnetoresistance , materials science , condensed matter physics , hydrostatic pressure , magnetization , electrical resistivity and conductivity , thermodynamics , magnetic field , physics , quantum mechanics , electrical engineering , engineering

The effect of substituting Ag for In on the structural, magnetocaloric, and thermomagnetic properties of Ni50Mn35In15−xAgx (x = 0.1, 0.2, 0.5, and 1) Heusler alloys was studied. The magnitude of the magnetization change at the martensitic transition temperature (TM) decreased with increasing Ag concentration. Smaller magnetic entropy changes (ΔSM) were observed for the alloys with larger Ag concentrations and the martensitic transition shifted to higher temperature. A shift of TM by about 25 K to higher temperature was observed for an applied hydrostatic pressure of P = 6.6 kbar with respect to ambient pressure. A large drop in resistivity was observed for large Ag concentration. The magnetoresistance was dramatically suppressed due to an increase in the disorder of the system with increasing Ag concentration. Possible mechanisms responsible for the observed behavior are discussed

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