X-ray and Mössbauer study of alnico 8

Mössbauer spectroscopy and X-ray studies have been used to investigate two Alnico 8 alloys in different stages of a thermomagnetic treatment cycle. It is revealed that the first low-temperature aging subsequent to magnetic field hardening results in redistribution of components among the alloy phases, while the second low-temperature aging causes the variation in the degree of weak magnetic phase order. The temperature range of developing effective magnetic fields on iron nuclei in the α phase is shown to lower with an increase in the degree of Fe3Al-type order.