Design and Development of Ni Based Heusler Alloys for Magnetic Refrigeration

Date

2016-10-01

Author

Toraman, Seda
Mehrabov, Amdulla
Akdeniz, Mahmut Vedat

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Magnetic refrigeration is a cooling technology based on the magnetocaloric effect (MCE). It has attracted increasing interest because of its higher cooling efficiency and enviromently friendliness. Recently, Nibased Heusler alloys have received considerable attention due to their unique properties like stronger magnetocaloric effect. In order to characterize the orderorder (L21ļB2) and order-disorder (B2ļA2) transitions in A2BC type full Heusler alloys, statisticothermodynamical theory of ordering by means of BraggWilliams-Gorsky (BWG) method combined with electronic theory in the pseudopotential approximation have been employed. The partial ordering energies, calculated according to the electronic theory of alloys in pseudopotential approximation for the first two coordination spheres were utilized as input data for the theoretical superlattice formation models based on BWG approximation. The L21ļB2 and B2ļA2 critical phase transformation temperatures have been determined in Ni50Mn50-xSbx alloy.

URI

http://www1.metalurji.org.tr/immc2016/IMMC2016_Bildiriler.pdf
https://hdl.handle.net/11511/81726

Conference Name

18th International Metallurgy & Materials Congress IMMC (29 Eylül - 01 Ekim 2016)

Collections

Department of Metallurgical and Materials Engineering, Conference / Seminar

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Citation Formats

S. Toraman, A. Mehrabov, and M. V. Akdeniz, “Design and Development of Ni Based Heusler Alloys for Magnetic Refrigeration,” İstanbul, Türkiye, 2016, p. 774, Accessed: 00, 2021. [Online]. Available: http://www1.metalurji.org.tr/immc2016/IMMC2016_Bildiriler.pdf.