Magnetism of hexagonal Mn1.5X0.5Sn (X = Cr, Mn, Fe, Co) nanomaterials.

Authors :: Fuglsby, R.
Kharel, P.
Zhang, W.
Valloppilly, S.
Huh, Y.
Sellmyer, D. J.
Source :: Journal of Applied Physics; 2015, Vol. 117 Issue 17, p17D115-1-17D115-4, 4p, 1 Chart, 3 Graphs
Publication Year :: 2015
Abstract: Mn<subscript>1.5</subscript>X<subscript>0.5</subscript>Sn (X = Cr, Mn, Fe, Co) nanomaterials in the hexagonal Ni<subscript>2</subscript>In-type crystal structure have been prepared using arc-melting and melt spinning. All the rapidly quenched Mn<subscript>1.5</subscript>X<subscript>0.5</subscript>Sn alloys show moderate saturation magnetizations with the highest value of 458 emu/cm<superscript>3</superscript> for Mn<subscript>1.5</subscript>Fe<subscript>0.5</subscript>Sn, 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/cm<superscript>3</superscript>. The vacuum annealing of the ribbons at 550 °C significantly improved their magnetic properties with the Curie temperature increasing from 206K to 273K for Mn<subscript>1.5</subscript>Fe<subscript>0.5</subscript>Sn. [ABSTRACT FROM AUTHOR]