Origin of magnetic properties and martensitic transformation of Ni-Mn-In magnetic shape memory alloys

Abstract

Entropy change linked to the magnetic field induced martensitic transformation in a Ni-Mn-In-Co shape memory alloy J. Appl. Phys. 107, 053501 (2010); 10.1063/1.3318491Entropy change and effect of magnetic field on martensitic transformation in a metamagnetic Ni-Co-Mn-In shape memory alloy

Enhancement of ferromagnetism by Cr doping in Ni-Mn-Cr-Sb Heusler alloys

“…[16][17][18] Based on the results of first-principles calculations and extended x-ray absorption fine structure (EXAFS) studies of NiMn-In full Heusler alloys, it has also been suggested that the Ni-Mn hybridization may be responsible for the magnetic properties, especially the antiferromagnetic interactions in the martensitic state, of the alloys. 18,19 According to these suggestions, a stronger hybridization would result in a stronger antiferromagnetic exchange and a weaker hybridization would imply a weaker antiferromagnetic exchange. Thus, the net ferromagnetism of the alloy would be enhanced with the weakening of the hybridization.…”

Designing a New Ni-Mn-Sn Ferromagnetic Shape Memory Alloy with Excellent Performance by Cu Addition

“…However, the DOS peak at the Fermi level (E f ) almost disappears when the transition of the tetragonal martensite phase to/from the cubic austenite phase takes place, as seen from the inset (expanded the regions near E f ). This behavior suggests that the DOS in the vicinity of the E f is an important factor that triggers the occurrence of martensitic transformation [31]. higher temperature, the Tc changes in the opposite directions.…”

“…However, the DOS peak at the Fermi level (Ef) almost disappears when the transition of the tetragonal martensite phase to/from the cubic austenite phase takes place, as seen from the inset (expanded the regions near Ef). This behavior suggests that the DOS in the vicinity of the Ef is an important factor that triggers the occurrence of martensitic transformation [31]. In order to have a further insight into the electronic structure, the magnetic properties, and the martensitic transformation of Ni 16 Mn 12 Sn 4−x Cu x alloys (x = 0, 1, and 2), we investigated the total density of states (DOS) for both the austenite (as indicated by the black line in Figure 7) and martensite phases (as indicated by the red line in Figure 7).…”

On the Mn-In-Ni Diatoms: Electronic Properties Depending on Spin Multiplicity

“…In literature, there are different types of studies related the materials including Mn, Ni, In atoms [8][9][10][11][12][13][14][15]. Also there are alloys with various ratios of the Mn, Ni, In atoms and theoretical prediction of shape memory behavior [16][17][18][19][20][21]. In these studies structural, electronic and magnetic properties of the shape memory behaviour materials have been investigated.…”