mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal Universitymrisel-116Research ArticleСтатьиImpurity spin in normal stochastic field: basic model of magnetic resonanceDzheparovF. S.

B. Cheremushkinskaya 25, Moscow 117258; Kashirskoe shosse 31, Moscow 115409

dzheparov@itep.ruLvovD. V.

B. Cheremushkinskaya 25, Moscow 117258; Kashirskoe shosse 31, Moscow 115409

Institute for Theoretical and Experimental Physics; National Research Nuclear University "MEPhI"Russian Federation20161712201618216201 (8 pp.)Copyright © Dzheparov F.S., Lvov D.V., 20242024Dzheparov F.S., Lvov D.V.Dzheparov F.S., Lvov D.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.mrsej.ru/jour/article/view/116

Famous Anderson-Weiss-Kubo model of magnetic resonance is reconsidered in order to bridge existing gaps in its applications for solutions of fundamental problems of spin dynamics and theory of master equations. The model considers the local field fluctuations as one-dimensional normal random process. We refined the conditions of applicability of perturbation theory to calculate the spin depolarization. It is shown that for very slow fluctuations the behavior of the longitudinal magnetization is simply related to the correlation function of the local field. The effect could be checked by the experimental studies of magnetic resonance in quasi-Ising paramagnets.

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The authors declare that there are no conflicts of interest present.