Mössbauer and neutron diffraction studies of BCC CrFeMn ternary alloys

Successive magnetic phase transitions of disordered BCC Cr65Fe20Mn15 alloy have been studied by Mossbauer effect and neutron diffraction measurements. The (1 0 0) antiferromagnetic peak was observed below T-N by neutron diffraction, and it still exists al the temperature of the ferromagnetic phase, indicating that the antiferromagnetic phase should coexist with the ferromagnetism. The mean hyperfine field by Mossbauer effect begins to grow below T-N with decreasing temperature and increases rapidly below T-C and T-g. The hyperfine field distribution at 13 K shows two distinct peaks in an agreement with Cr80Fe20 alloy.