Structural and Magnetic Properties of Mn$_{1.5}$X$_{0.5}$Sn (X $=$ Cr, Mn, Fe, Co) Melt-spun Ribbons

POSTER

Abstract

Mn$_{1.5}$X$_{0.5}$Sn (X $=$ Cr, Mn, Fe, Co) nanomaterials in a hexagonal Ni$_{2}$In-type crystal structure have been prepared using arc-melting and melt spinning. All the samples show moderate saturation magnetization at 100 K with a highest value of 458 emu/cm$^{3}$ for Mn$_{1.5}$Fe$_{0.5}$Sn, but their Curie temperatures (Tc) are less than 300 K. The highest Tc is 206 K for the Fe containing sample. All samples except the Cr containing one show irreversibility between the zero-field-cooled and field-cooled measurements at the low temperature, showing a spin reorientation or spin-glass-like behavior. The magnetic anisotropy constants calculated at 100 K are on the order of 1 Merg/cm$^{3}$. The magnetic properties of these materials have substantially improved due to vacuum annealing, where the Tc for Mn$_{2}$Sn annealed at 450 $^{\circ}$C has increased by about 75 K from 190 K to 265 K.

*Research is supported by Department of Physics, SDSU. Research at UNL is supported by NSF-MRSEC Grant DMR-0820521 and DOE-BES-DMSE Grant DE-FG 02-04ER46152.

Authors

  • R. Fuglsby

    • Department of Physics, South Dakota State University
    • Department of Physics, South Dakota State University, Brookings, SD

  • P. Kharel

    • Department of Physics, South Dakota State University
    • Department of Physics, South Dakota State University, Brookings, SD

  • W. Zhang

    • Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, NE 68588
    • Nebraska Center for Materials and Nanosceince and Department of Physics and Astronomy, University of Nebraska
    • Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, NE

  • S. Valloppilly

    • Nebraska Center for Materials and Nanosceince, University of Nebraska
    • Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, NE

  • Y. Huh

    • Department of Physics, South Dakota State University
    • Department of Physics, South Dakota State University, Brookings, SD

  • David Sellmyer

    • Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, NE 68588
    • Nebraska Center for Materials and Nanosceince and Department of Physics and Astronomy, University of Nebraska
    • NCMN, University of Nebraska, Lincoln, NE 68588
    • Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, NE
    • University of Nebraska, Lincoln, NE 68588