Magnetism of hexagonal Mn_1.5X_0.5Sn (X = Cr, Mn, Fe, Co) nanomaterials

Authors

R Fuglsby, South Dakota State University, University of Nebraska-Lincoln
Parashu Kharel, South Dakota State University, University of Nebraska-LincolnFollow
Wenyong Zhang, University of Nebraska-LincolnFollow
Shah R. Valloppilly, University of Nebraska-LincolnFollow
Yung Huh, South Dakota State UniversityFollow
David J. Sellmyer, University of Nebraska at LincolnFollow

Date of this Version

2015

Citation

JOURNAL OF APPLIED PHYSICS 117, 17D115 (2015)

Comments

Copyright 2015 Used by permission

Abstract

Mn1.5X0.5Sn (X = Cr, Mn, Fe, Co) nanomaterials in the hexagonal Ni2In-type crystal structure have been prepared using arc-melting and melt spinning. All the rapidly quenched Mn1.5X0.5Sn alloys show moderate saturation magnetizations with the highest value of 458 emu/cm3 for Mn1.5Fe0.5Sn, but their Curie temperatures are less than 300K. All samples except the Cr containing one show spin-glass-like behavior at low temperature. The magnetic anisotropy constants calculated from the high-field magnetization curves at 100K are on the order of 1 Merg/cm3. The vacuum annealing of the ribbons at 550 C significantly improved their magnetic properties with the Curie temperature increasing from 206K to 273K for Mn1.5Fe0.5Sn.