Some aspects of spin relaxation in ferromagnets in a magnetic field

In the Vaks-Larkin-Pikin spin model the asymptotics of the pair spin correlators are derived in the right neighbourhood of the Curie point and at the non-zero external magnetic field. Using this asymptotics the critical anomalies of the NMR line are found as well as the phonon damping and renormalization of the sound velocity in the isotropic Heisenberg ferromagnet. (author)