Effect of a magnetic field on the longitudinal spin relaxation of μ+ in isotropic ferromagnets in the critical paramagnetic vicinity of Tc
Lazuta A. V., Yushankhai V. Yu.
A theory is derived for the behavior of the longitudinal spin relaxation ìà (r,i/) of muons as a function of the magnetic field Η in ferromagnets in the critical region above Tc. The results show that a study of ìà (τ,Η) would make it possible to determine the spin diffusion coefficient of the magnetic material.