Abstract
AbstractThe influence of the rf perturbation (magnetization reversal) in the magnetically ordered system on its Mössbauer spectrum (MS) is discussed theoretically. Similarly to the traditional MS the behaviour of the time gated MS in this condition is analysed as an extension of the time‐dependent Mössbauer spectroscopy methodology to the magnetization dynamics problem. This problem is discussed on the basis of Blume's theory generalized for time dependent hyperfine interactions. The calculations in the framework of a rotating field model reveal a remarkable distortion in MS at nonresonant radio frequencies. The phenomenon of supression of the nuclear Zeeman structure under rotating rf field is revealed. The time‐dependent effects in MS can be used to understand the high frequency magnetization reversal processes in magnetic materials.
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