Effect of structural disorder on the magnetocaloric properties of Ni-Mn-Sn alloy

Journal Article · Mon Jan 20 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4862431· OSTI ID:22280612

Ghosh, Arup; Mandal, Kalyan ^[1]

---

1. Magnetism Laboratory, Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake, Kolkata 700098 (India)

The magnetic and magnetocaloric properties of Ni{sub 50}Mn{sub 36.5}Sn{sub 13.5} Heusler alloy has been studied by varying the duration of annealing (0, 6, 12, 18, and 24 h) at 1173 K. The atomic ordering increases, martensitic transition (MT) becomes sharper and exchange bias field increases with increasing annealing time. The sample annealed for 24 h has shown a large magnetic entropy change (ΔS{sub M}) near its MT. But, the net refrigerant capacity at the MT of 12 h annealed sample is larger than the former one. We have discussed these results in the context of structural disorder and the ferro/antiferro correlations present in these alloy systems.

• OSTI ID: 22280612
• Journal Information: Applied Physics Letters, Vol. 104, Issue 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADIABATIC DEMAGNETIZATION
ANNEALING
ANTIFERROMAGNETISM
FERROMAGNETISM
HEUSLER ALLOYS
MAGNETIC PROPERTIES
NICKEL ALLOYS
TEMPERATURE DEPENDENCE
TIN ALLOYS