Probing Structural and Magnetic Instabilities and Hysteresis in Heuslers by Density Functional Theory Calculations

Entel, Peter; Gruner, Markus E.; Faehler, Sebastian; Acet, Mehmet; Cahir, Asli; Arroyave, Raymundo; Sahoo, Sanjubala; Duong, Thien C.; Talapatra, Anjana; Sandratskii, Leonid; Mankowsky, Sergei; Gottschall, Tino; Gutfleisch, Oliver; Lazpita, Patricia; Chernenko, Volodymyr A.; Barandiaran, Jose M.; Sokolovskiy, Vladimir V. and Buchelnikov, Vasiliy D. (2018): Probing Structural and Magnetic Instabilities and Hysteresis in Heuslers by Density Functional Theory Calculations. In: Physica Status Solidi B-Basic Solid State Physics, Vol. 255, No. 2, 1700296

Abstract

Martensitic transformations of rapidly quenched and less rapidly cooled Heusler alloys of type Ni-Mn-X with X=Ga, In, and Sn are investigated by ab initio calculatioms. For the rapidly cooled alloys, we obtain the magnetocaloric properties near the magnetocaloric transition. For the less rapidly quenched alloys these magnetocaloric properties start to change considerably, each alloy transforms during temper-annealing into a dual-phase composite alloy. The two phases are identified to be cubic Ni-Mn-X and tetragonal NiMn.

• Item Type: Journal article
• Faculties: Chemistry and Pharmacy > Department of Chemistry
• Subjects: 500 Science > 540 Chemistry
• ISSN: 0370-1972
• Language: English