Pd. Dereotier et al., WAVE-VECTOR REGION PROBED BY ZERO-FIELD MUON-SPIN-RELAXATION MEASUREMENTS IN PARAMAGNETS NEAR THE CURIE-TEMPERATURE, Physical review. B, Condensed matter, 50(5), 1994, pp. 3033-3036
We show that zero-field muon-spin-relaxation studies of the critical p
aramagnetic fluctuations in ferromagnets are mostly sensitive to fluct
uation modes at small wave vectors. The transverse-fluctuation modes c
an be probed very close to the zone center when the temperature approa
ches the Curie temperature. A quantitative determination of the zone p
robed in Ni and Fe is performed.