Spin Reorientation of Mn_2-xFe_xSb

Abstract

The composition and pressure effects on the spin reorientation temperature ( T sr ) for Mn 2- x Fe x Sb have been measured. The composition dependence of T sr increases rapidly with increasing x at normal atmospheric pressure. The pressure dependence of T sr for Mn 1.9 Fe 0.1 Sb increases linearly with increasing applied pressure and the value of d T sr /d p is +3.14 K/kbar. On the basis of the pressure and composition effects on T sr , the microscopic origin of the magnetic anisotropy of Mn 2- x Fe x Sb is discussed.