Magnetic properties in some sputtered RCo2 amorphous alloys (R = rare-earth = Er, Sm, Tb)

Soltani, M.L

doi:10.1016/j.jallcom.2003.11.080

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…If a textbook paramagnet is an ideal gas of noninteracting magnetic moments, it appears clearly that ErCo 2 is a very strongly correlated paramagnet, in which Co has a very strong tendency to form clusters, or "droplets," suggesting a liquidlike magnetic state, rather than an ideal gas. This tendency is however reminiscent of the fact that amorphous ErCo 2 is a ferrimagnet due to the Co-Co interaction at temperatures as high as 470 K, [46][47][48] one order of magnitude higher than the T c of crystalline ErCo 2 .…”

Section: B Paramagnetic Regimementioning

confidence: 99%

μSR study of short-range magnetic order in the paramagnetic regime of ErCo2

et al. 2011

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Zero-field muon spin relaxation spectroscopy (μSR) measurements in the paramagnetic phase of ErCo 2 ferrimagnetic system are reported. Previous experimental studies using macro-and microscopic techniques led to the identification of magnetic short-range correlations between the Co atoms in the paramagnetic state of this material. The analysis of μSR spectra recorded on ErCo 2 well above T c indicates two dynamical magnetic processes characterized by remarkably different relaxation rates: a slow-relaxing signal, which quantitatively coincides with previous μSR studies on ErAl 2 , and fast-relaxing signal, which can be ascribed to the Co short-range correlated regions observed above T c . Moreover, the μSR technique provides information on the thermal dependence of Co correlated regions at true zero field. These findings shed light on the dynamical nature of the clustered phase developing in the paramagnetic state of ErCo 2 .

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Section: B Paramagnetic Regimementioning

confidence: 99%

μSR study of short-range magnetic order in the paramagnetic regime of ErCo2

et al. 2011

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“…3(a)): this can be explained by the competition which occurs between a well defined in-plane anisotropy and a perpendicular anisotropy. This is a biaxial anisotropy regime where there is competing in-plane and perpendicular anisotropy terms [10][11][12]. The effects of annealing above 450°C, near the crystallisation temperature (550°C), allow to indicate that the magnetic behavior of annealed sample have the magnetic behavior of cluster [12].…”

Section: Amorphous Er-comentioning

confidence: 99%