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- W1986348786 abstract "ZF-, LF- and TF- μSR-measurements were started with the aim to study the interplay of the R- and Fe-sublattices in establishing the magnetic order by comparing TbFe4Al8 and YFe4Al8. Comparison of the spin-lattice relaxation rates between the two compounds shows that the fast relaxation visible in TbFe4Al8 arises from the Tb 4f moments and is best fitted with a streched exponential (exp (−λt)β). The slowing down of the spin dynamics in Tb with β decreasing from 1 to 13 on approaching TN from above, is characteristic for the universal behaviour of a classical spin glass. However, the T-dependence of λ resembles more that of a conventional AF system involving rare earth moments. As neutron diffraction has shown long-range magnetic order sets in immediately below TN. The present experiment suggests that the slowing down of the spin dynamics is governed by competing interactions leading to a wide distribution of time correlations. However, the ensuing frustration does not seem to be strong enough to prevent the onset of long-range magnetic order below TN involving both the Tb and the Fe moments. These results confirm the complex long-range ordering process associated with two distinct order parameters and the simultaneous ordering of the two sublattices found by neutron diffraction." @default.
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- W1986348786 date "2000-08-01" @default.
- W1986348786 modified "2023-09-27" @default.
- W1986348786 title "Comparative study of the magnetic properties of TbFe4Al8 and YFe4Al8 compounds" @default.
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- W1986348786 doi "https://doi.org/10.1016/s0921-4526(00)00392-6" @default.
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