K. Szymanski et al., SINGLE LINE CIRCULARLY-POLARIZED SOURCE FOR MOSSBAUER-SPECTROSCOPY, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 119(3), 1996, pp. 438-441
A single line circularly polarised source with a degree of polarisatio
n equal to (80+/-2)% was constructed. The source can be used as an ext
remely useful tool for a quick, unique and simple determination of the
sign of hyperfine field. Test measurements on alpha-Fe demonstrate th
at the sign of hyperfine magnetic field follows changes of the sign of
an external magnetizing field. The hyperfine magnetic field observed
in HoFe2 in which Fe magnetic moments are oriented antiparallel to the
total magnetisation, is shown. The excellent performance of the sourc
e opens up new possibilities of studying materials with inhomogeneous
magnetisation distribution.