MAGNETISM AND HYPERFINE FIELDS IN YFE10V2 - A COMBINED NUCLEAR-MAGNETIC-RESONANCE AND MOSSBAUER STUDY

A combined nuclear magnetic resonance (NMR) and Mossbauer effect study of YFe10V2 has been carried out. Based on the Fe-57 hyperfine fields (HFS) obtained from the Mossbauer results, the resonance lines of the NMR spectrum are assigned and the site preference of V atoms is determ ined. On the other hand, according to the site preference of vanadium atoms determined by NMR, together with neutron diffraction results, th e Fe-57 Mossbauer spectrum is fitted. It can be deduced from the NMR r esults that the existence of one nearest-neighbour Fe atom leads to an increase in the V HF of about 0.35, and the core electron polarizatio n contribution H(cp), the 4s conduction electron polarization contribu tion H(s) and the effect of the second-nearest-neighbour Fe atoms on t he HF Sites cannot be negligible.