Hyperfine interaction measurements inMnSi-alloys

PAC-experiments were performed on111Cd in Mn1−xSix (x=8.8at%) alloys. The high-field site (h) due to the local moments existing at site II positions is almost unaffected by the Si-impurities. For the second field site (1), supposed to be due to SDW, the ordering temperature is shifted to 77(2)K, although the field value is very similar to the pure α-Mn value. This observation supports our earlier interpretation of the magnetism in pure α-Mn.