Effect of annealing on the martensitic transformation and magnetocaloric effect in Ni{sub 44.1}Mn{sub 44.2}Sn{sub 11.7} ribbons

Journal Article · Mon Jun 16 00:00:00 EDT 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2948904· OSTI ID:21120830

Xuan, H C; Xie, K X; Wang, D H; Han, Z D; Zhang, C L; Gu, B X; Du, Y W ^[1]

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1. National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093 (China)

The Ni{sub 44.1}Mn{sub 44.2}Sn{sub 11.7} ribbons were prepared by melt spinning. A single-phase austenite with L2{sub 1} structure was confirmed in the melt-spun ribbons at room temperature. After the heat treatment, the martensitic transformation temperature increases obviously in the annealed ribbons. This method may be an effective way to tune the characteristic temperatures in the ferromagnetic shape memory alloys. Giant magnetic entropy changes are observed in the annealed ribbons. The peak values at 10 kOe are 32.1 and 20.1 J/kg K, for the ribbons annealed at 1123 and 1173 K, respectively.

• OSTI ID: 21120830
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 24 Vol. 92; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
AUSTENITE
ENTROPY
MAGNETIC PROPERTIES
MANGANESE ALLOYS
NICKEL ALLOYS
PHASE TRANSFORMATIONS
SHAPE MEMORY EFFECT
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 1000-4000 K
TIN ALLOYS