磁気緩和現象の理論 I

一般論

抄録

It is proposed to reformulate the problem of magnetic relaxation in the language of two-time Green's function which is a natural extension of the relaxation function. As an example we may discuss the following items in some detail resorting to a Gaussion random approximation of the higher order Green's functions. The shape of the magnetic nesonance is expressed by a generalized formula which is valid for both para-and ferro-magnetic ranges, between which we find an anomalous behaviour at the Curie point. Phase-as well as polarization-diffusion are included as the limit of the long wave. The former is related to the spectral diffusion and the later corresponds to the ordinary spin diffusion.