Magnetostructural transition behavior in Fe-doped Heusler Mn-Ni-In ribbon materials
Document Type
Article
Publication Date
11-1-2016
Abstract
In the present work, we investigated magnetostructural transition behavior in Mn-rich Heusler Mn50-xFexNi41In9 (x=0, 1, 2, 3 at%) ribbon materials. Microstructural observations showed that substituting Mn with Fe in Mn50Ni41In9 led to striking grain refinement from ?50 ?m to 5-10 ?m, and formation of a secondary phase when Fe content was increased up to 2 at%. Differential scanning calorimetric and thermomagnetic measurements indicated that a paramagnetic?ferromagnetic transition in austenite occurred first, followed with a weak-magnetic martensitic transition upon cooling for the Mn50-xFexNi41In9 (x=0, 1, 2). In case of Mn47Fe3Ni41In9, the martensitic transformation happened between paramagnetic austenite and weak-magnetic martensite, without the presence of the magnetic transition in austenite. The effective refrigeration capacity of Mn49Fe1Ni41In9 reached 137.1 J kg-1 under a magnetic field change of 30 kOe.
Recommended Citation
Li, Hongwei; Fang, Yue; Feng, Shutong; Zhai, Qijie; Luo, Zhiping; and Zheng, Hongxing, "Magnetostructural transition behavior in Fe-doped Heusler Mn-Ni-In ribbon materials" (2016). College of Health, Science, and Technology. 876.
https://digitalcommons.uncfsu.edu/college_health_science_technology/876