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It is found that increasing the frequency of an alternating magnetic field leads to an anomalous shift in the temperature maximum of the dynamic magnetic susceptibility in ε-In0.24Fe1.76O3 nanowires in a direction opposite to theoretical predictions for thermally activated processes. This unusual effect can be explained in terms of a redistribution of the contributions to the dynamic magnetic susceptibility from the high- and low-temperature phases, each of which is described by a cluster glass model. The contributions of these phases to the electron spin resonance spectra are identified.
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Dmitriev et al. (2015) studied this question.
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