Abstract
Data on the experimental detection and use of three-particle (chiral) spin dynamic correlations in ferromagnets are presented. The oblique-geometry method for investigating polarized neutron small-angle scattering is described, which gives the dependence that the scattering asymmetry has on the polarization P signs and the scattering angle θ. The following results of the dynamics investigation in the critical and ferromagnetic phases in the magnetic field are presented: the temperature dependence of the critical field Hc, the factorization of the momentum transfer dependence of three-particle vertices, the corroboration of the “hard” version of the dipole critical dynamics, and the dynamics of amorphous magnets and invars.
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