Physical Sciences and Mathematics Commons^™

Structure And Magnetism Of Nifemngaxsn1-X (X=0, 0.25, 0.5, 0.75, 1.00) Heusler Compounds, Jace Waybright, Lee Halbritter, Bishnu Dahal, Hanyang Qian, Yung Huh, Pavel Lukashev, Parashu Kharel

Faculty Publications

The crystal structure and magnetic properties of NiFeMnGa_xSn_1-x (x = 0, 0.25, 0.50, 0.75 and 1.00) Heusler compounds have been investigated experimentally and theoretically. The computational results suggest that NiFeMnGa_0.75Sn_0.25 is nearly half-metallic with a spin polarization P of 87%. The bulk samples prepared using arc-melting and annealing exhibit a high degree of Y-type order. All the investigated samples show ferromagnetic spin order with the Curie temperatures ranging from 284 K for NiFeMnGa to 408 K for NiFeMnSn. The intermediate composition NiFeMnGa_0.75Sn_0.25, which is predicted to be nearly half metallic, …