| Popis: |
A neutron-diffraction investigation has been performed on the magnetic structures, and their transformations, of the simple cubic magnetic lattice of the ordered Fe(Pd1−xAux)3 alloys as well as the base-centred cubic and tetragonal magnetic lattices of the ordered Fe(Pt1−xMnx)3 alloys. It has been shown, that the transition from the ferromagnetic structure of FePd3 (0, 0, 0) to the antiferromagnetic one of FePd2Au (0, 0, 1 2 ) occurs through the coplanar structure. On the contrary, in the Fe(Pt1−xMnx)3 system the transition region between the collinear structures is characterized by noncoplanar structures in which there is a spin-glass component of the total magnetic moment per magnetic atom in one direction. |
