Observation of magnetization process of massive ferromagnetic by means of neutron radiography with refractive contrast

Results of observing the processes of the massive ferromagnetic magnetization with application of neutron radiography with refractive contrast are presented. The cylindrical monocrystals Fe-Si with [001] axis and 13 mm diameter were used as samples. The study on the crystals internal domain structure were carried out in the field 1.5 k Gs for the sample 22 mm long and in fields 3.5-8 k Gs for the sample 9 mm long. The character of the domain structure reconstruction in the field testifies to the prevalence of shift processes in weak fields