K. Nomura et al., SURFACE-ANALYSIS OF PLATE-SHAPED AND GRANULAR-SHAPED FE-SI-AL ALLOY POWDERS BY CEMS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 76(1-4), 1993, pp. 199-201
The bulk and surface layers of plate and granular powders of Fe-Si-Al
alloy were analysed by transmission Mossbauer spectrometry and convers
ion electron Mossbauer spectrometry (CEMS). The internal magnetic hype
rfine fields decreased slightly with the decrease of the particle size
. Also at the surface layers it decreased more than in the bulk. The m
agnetic field distribution varied between plate and granular particles
. The difference between the surface and the bulk of pulverized alloy
was demonstrated.