Abstract
Magnetic properties of bcc Cr1−xMnx alloys with x up to 0.69 have been studied by means of neutron diffraction and susceptibility measurements. The average magnetic moment of the constituent atoms shows an abrupt increase in magnitude in the region 0.5<x<0.69. The reduction of the sublattice magnetization of the x=0.69 alloy with increasing temperature is much faster than that of the x=0.20 alloy. These observations are indicative of the existence of two electronic states of the bcc Mn with different magnetic moment. The alloys with x>0.4 show a reentrant spin-glass transition around 40 K.
