Observation of fluctuations in the magnetic moments of microscopic particles through the Raman scattering of Mossbauer radiation
Zelepukhin M. V., Sedov V. E., Smirnov G. V., Dubinin V. N., Razumov O.N.
A frequency-shifted component has been detected in the Mossbauer spectrum of nuclei contained in magnetic FeOOH microscopic particles. This shifted component is evidence that the 57Fe nuclei in an excited state undergo a transition to another hyperfine sublevel. This observation is a direct indication of fluctuation processes in the microscopic particles which were studied.