Effects of the partial substitution of Ni by Cr on the transport, magnetic, and magnetocaloric properties of Ni50Mn37In13

Journal Article · Wed Mar 15 00:00:00 EDT 2017 · AIP Advances

DOI:https://doi.org/10.1063/1.4978909· OSTI ID:1349387

Pandey, Sudip ^[1]; Quetz, Abdiel ^[1]; Aryal, Anil ^[1]; Saleheen, Ahmad Us ^[2]; Rodionov, Igor ^[3]; Blinov, Mikhail  ^[3]; Prudnikova, Mariya ^[3]; Dubenko, Igor ^[1]; Prudnikov, Valerii ^[3]; Mazumdar, Dipanjan ^[1]; Granovsky, Alexander  ^[3]; Stadler, Shane ^[2]; Ali, Naushad ^[1]

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1. Department of Physics, Southern Illinois University, Carbondale, Illinois 62901, USA
2. Department of Physics & Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA
3. Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russian Federation

Here, the structural, magnetic, and magnetotransport properties of Ni_50-xCr_xMn₃₇In₁₃ Heusler alloys have been synthesized and investigated by x-ray diffraction (XRD), field and pressure dependent magnetization, and electrical resistivity measurements. The partial substitution of Ni by Cr in Ni₅₀Mn₃₇In₁₃ significantly improves the magnetocaloric effect in the vicinity of the martensitic transition (T_M). This system also shows a large negative entropy change at the Curie temperature (T_C), making it a candidate material for application in a refrigeration cycle that exploits both positive and negative magnetic entropy changes. The refrigeration capacity (RC) values at T_M and T_C increase significantly by more than 20 % with Cr substitution. The application of hydrostatic pressure increases the temperature stability of the martensitic phase in Ni₄₅Cr₅Mn₃₇In₁₃. The influence of Cr substitution on the transport properties of Ni₄₈Cr₂Mn₃₇In₁₃ is discussed. An asymmetric magnetoresistance, i.e., a spin-valve-like behavior, has been observed near T_M for Ni₄₈Cr₂Mn₃₇In₁₃.

• Research Organization: Southern Illinois Univ., Carbondale, IL (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: FG02-06ER46291; FG02-06ER46946
• OSTI ID: 1349387
• Alternate ID(s): OSTI ID: 1393518; OSTI ID: 1421277
• Journal Information: AIP Advances, Journal Name: AIP Advances Vol. 7 Journal Issue: 5; ISSN 2158-3226
• Publisher: American Institute of Physics
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Nickel
Curie point
Magnetic fields
Entropy
Magnetoresistance