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Muon Spin Relaxation Study of Reentrant Spin Glasses: Amorphous-Fe_{1-x}Mn_x

M. J. P. Gingras·M. Larkin·I. Mirebeau·W. D. Wu·K. Kojima·G. M. Luke·B. Nachumi·Y. J. Uemura
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Abstract

We have performed an extensive muon spin relaxation study of the well known (Fe$_{1-x}$Mn$_{x}$)$_{75}$P$_{16}$B$_6$Al$_3$ reentrant spin glass. We find a strong increase of the dynamic as well as static muon depolarization rate at the paramagnetic to ferromagnetic transition temperature, $T_c$, and at $T_f$ ($T_f<T_c$) that corresponds to the onset of strong bulk magnetic irreversabilities. We find no critical dynamic signature of a freezing of the transverse $XY$ spin components at an intermediate temperature $T_{xy}$ ($T_f < T_{xy} < T_c$) where extra static order not contributing to the magnetization starts developping.

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M. J. P. Gingras, M. Larkin, I. Mirebeau, W. D. Wu, K. Kojima, G. M. Luke, B. Nachumi, Y. J. Uemura. 1997-09-17. Muon Spin Relaxation Study of Reentrant Spin Glasses: Amorphous-Fe_{1-x}Mn_x. https://arxiv.org/abs/cond-mat/9709190

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