Modeling and Characterization of the Magnetocaloric Effect in Ni2MnGa Materials

Journal Article · Wed Jan 01 00:00:00 EST 2014 · International Journal of Refrigeration

DOI:https://doi.org/10.1016/j.ijrefrig.2013.10.001· OSTI ID:1113683

Nicholson, Don M ^[1]; Odbadrakh, Khorgolkhuu ^[1]; Shassere, Benjamin ^[1]; Rios, Orlando ^[1]; Hodges, Jason P ^[1]; Ludtka, Gerard Michael ^[1]; Porter, Wallace D ^[1]; Safa-Sefat, Athena ^[1]; Rusanu, Aurelian ^[1]; Brown, Greg ^[1]; Evans, III, Boyd Mccutchen ^[1]

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1. ORNL

Magnetic shape memory alloys have great promise as magneto-caloric effect refrigerant materials due to their combined magnetic and structural transitions. Computational and experimental research is reported on the Ni2MnGa material system. The magnetic states of this system are explored using the Wang-Landau statistical approach in conjunction with the Locally Self-consistent Multiple-Scattering method. The effects of alloying agents on the transition temperatures of the Ni2MnGa alloy are investigated using differential scanning calorimetry and superconducting quantum interference device. Experiments are performed at the Spallation Neutron Source at Oak Ridge National Laboratory to observe the structural and magnetic phase transformations.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
• Sponsoring Organization: USDOE Office of Science (SC); USDOE Laboratory Directed Research and Development (LDRD) Program
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1113683
• Journal Information: International Journal of Refrigeration, Vol. 37; ISSN 0140-7007
• Country of Publication: United States
• Language: English

Related Subjects

magneto caloric
Ni2MnGa