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Title: Large magnetic entropy change and magnetoresistance in a Ni41Co9Mn40Sn10 magnetic shape memory alloy

Journal Article · · Journal of Alloys and Compounds
 [1];  [2];  [3];  [4];  [5];  [4];  [3];  [6];  [2]
  1. Univ. of Science and Technology, Beijing (China); Beijing Institute of Technology, Beijing (China)
  2. Univ. of Science and Technology, Beijing (China)
  3. Beijing Univ. of Technology, Beijing (China)
  4. Beijing Institute of Technology, Beijing (China)
  5. Northeastern Univ., Shenyang (China)
  6. Argonne National Lab. (ANL), Argonne, IL (United States)

A polycrystalline Ni41Co9Mn40Sn10 (at. %) magnetic shape memory alloy was prepared by arc melting and characterized mainly by magnetic measurements, in-situ high-energy X-ray diffraction (HEXRD), and mechanical testing. A large magnetoresistance of 53.8% (under 5 T) and a large magnetic entropy change of 31.9 J/(kg K) (under 5 T) were simultaneously achieved. Both of these values are among the highest values reported so far in Ni-Mn-Sn-based Heusler alloys. The large magnetic entropy change, closely related to the structural entropy change, is attributed to the large unit cell volume change across martensitic transformation as revealed by our in-situ HEXRD experiment. Furthermore, good compressive properties were also obtained. Lastly, the combination of large magnetoresistance, large magnetic entropy change, and good compressive properties, as well as low cost makes this alloy a promising candidate for multifunctional applications.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1245146
Alternate ID(s):
OSTI ID: 1422668
Journal Information:
Journal of Alloys and Compounds, Vol. 647, Issue C; ISSN 0925-8388
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 47 works
Citation information provided by
Web of Science

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Cited By (4)

Hysteresis loss reduction and magnetocaloric effect improvement in the Ni-Co-Mn-In alloys journal January 2020
Powder Metallurgy Synthesis of Heusler Alloys: Effects of Process Parameters journal May 2019
Martensitic transformation and magnetic properties in Mn49−xCuxNi41Sn10(x = 0–2) journal September 2018
Ferromagnetic Shape Memory Heusler Materials: Synthesis, Microstructure Characterization and Magnetostructural Properties journal June 2018