X-ray and Mössbauer study of rapidly solidified Ce20Fe80 ribbons; effect of the quenching rate

Roulin, G; Teillet, J.; Fnidiki, A.; Labulle, B.; Ochin, P.

doi:10.1007/bf02068703

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…Our 4.2 K spectra rule out the possibility of the doublet arising from alloy formation between Fe and Ce at the interfaces. The CeFe 2 and Ce 2 Fe 17 alloys, that are allowed by the Ce-Fe phase diagram, are paramagnetic at room temperature [23], but at 4.2 K are reported to have hyperfine fields of 169 kG and 255 kG respectively [24,25], which are much lower than our observed field of 340 kG.…”

Section: Cemscontrasting

confidence: 76%

Magnetic anisotropy in Ce/Fe and Ce/FeCoV multilayers

Case

Thomas

Lucas

et al. 2001

J. Phys.: Condens. Matter

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Multilayer samples of Ce/Fe and Ce/FeCoV, fabricated by sputtering and characterized by means of x-ray diffraction and reflectivity, were studied by 57Fe Mössbauer spectroscopy and polarized neutron reflectivity. In the Ce/Fe system a paramagnetic Fe phase is observed at room temperature for Fe thicknesses below 20 Å. This phase is ordered at 4.2 K, and is attributed to amorphous Fe at the interface with Ce. In contrast, the Ce/FeCoV system is ferromagnetic at room temperature for all layer thicknesses studied. From the relative intensity of the Mössbauer lines we show that both systems exhibit a perpendicular magnetic anisotropy for magnetic layers of less than 17 Å thickness, indicating a positive interface anisotropy constant, KS. For a selection of Ce/Fe samples, the reorientation of the magnetic moments in magnetic fields applied normal to the layers enabled the magnetic anisotropy energy Keff of each sample to be evaluated. The trend of the values of Keff gave volume and interface anisotropy constants KV = 1.1 (±1.2)×105 J m-3 and KS = 0.98 (±0.15)×10-3 J m-2 for the Ce/Fe system, where the positive values indicate a preference for an out-of-plane orientation of the magnetization.

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Section: Cemscontrasting

confidence: 76%

Magnetic anisotropy in Ce/Fe and Ce/FeCoV multilayers

Case

Thomas

Lucas

et al. 2001

J. Phys.: Condens. Matter

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“…In the investigation of MGs, the Mössbauer spectrometry is frequently applied [1][2][3][4][5][6]. This method was used also to study correlations between quenching wheel velocity and structural properties of several types of MGs [7,8]. Other methods of investigations including theoretical calculations were also employed [9,10].…”

Section: Introductionmentioning

confidence: 99%

Thickness Dependence of Mössbauer Parameters for Fe_{78}Si_{9}B_{13} Metallic Glass Ribbons

et al. 2017

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Changes in magnetic microstructure of Fe78Si9B13 ribbons were investigated by the Mössbauer spectrometry as a function of their thickness. The latter decreases inversely with the quenching wheel velocity. Amorphicity of the samples was checked by X-ray diffraction and the Mössbauer spectrometry. Average values of hyperfine magnetic fields do not appreciably differ with the production velocity. On the other hand, notable deviations are observed in the position of a net magnetic moment. After annealing with moderate temperature, the magnetic anisotropy improves as indicated by an increase of the average value of hyperfine magnetic field. However, magnetic moments turn out of the ribbon plane and this process continues towards higher production velocity, i.e., smaller thickness of the ribbons. No appreciable deviations in the investigated Mössbauer parameters were revealed after annealing during different time intervals.

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