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.

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