A binary ferromagnetic alloy with magnetic moments dependent on local environment. 2

The neutron magnetic elastic scattering and the hyperfine field distribution are calculated for a collinear ferromagnetic alloy with magnetic moments which depend on their local chemical environment in a step-like manner (Jaccarino-Walker model). The question is analyzed how, using experimental data, one can discern the model under study from a binary magnetic alloy with competitive nearest-neighbour exchange interactions and permanent magnetic moments. In the framework of the Jaccarino-Walker model the concentration dependences of the spontaneous magnetization and Curie temperatures for Ni and Co alloys with elements of the Pt as well as Pd group are considered. (author)