Arrangements of magnetic moments in nanocrystalline Fe48Al52 -: art. no. 104409

Combined techniques, EXAFS, magnetization, and Mossbauer polarimetry are used to investigate the orientation of Fe magnetic moments in a Fe48Al52 disordered alloy prepared by mechanical grinding. Local Fe magnetic moments and their contributions to the net magnetization at selected external fields and temperatures were estimated. It was found that components of the Fe magnetic moments parallel to the net magnetizations reduce their values much faster with an increasing number of neighboring Al atoms than the total iron moments. Data analysis indicates that magnetic moments of Fe atoms surrounded by (7Al+1Fe) in the first coordination shell and by (1Al+5Fe) in the second coordination shell possess nonzero magnetic moments that form a noncolinear structure.