Effect of isoelectronic substitution on phase transition and magnetic properties of Ni57Mn18Ga25-xInx (0 ⩽ x ⩽ 8) alloys with Ni excess.

Autor: Jinghua Liu, Jingmin Wang, Linfang Zhang, Xiao Wang, Hui Hua, Chengbao Jiang
Předmět:
Zdroj: Journal of Applied Physics; 2015, Vol. 117 Issue 15, p153904-1-153904-4, 4p, 5 Graphs
Abstrakt: Effect of isoelectronic substitution of In for Ga on the phase transition and magnetic properties was studied in Ni57Mn18Ga25-xInx (0 ⩽ x ⩽ 8) alloys. With the increasing In content, the roomtemperature phase structure evolved from tetragonal martensite to cubic austenite. The martensitic transformation temperatures were significantly decreased by the substitution of In for Ga, but the austenitic Curie temperature was only slightly decreased. Especially, both thermal and isothermal magnetization measurements revealed that the Curie temperature and saturation magnetization of the martensite were independent on the isoelectronic substitution. The results were discussed by considering the phase structures and the atomic interactions. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index