Journal ArticleDOI
Effect of hydrogen on the magnetic properties of Dy0.73Tb0.27Fe2−xCox [x = 0.5, 1.0, 2.0]
TLDR
In this paper, the magnetic moments of the hydrides are found to be less than those of the unhydrided materials and the magnetization measurements carried out at 300 K showed large anisotropy and remanence for hydride of both x = 0.5 and 1.0 and these were further enhanced at 24 K.Abstract:
Dy0.73Tb0.27Fe2−xCox (x = 0.5, 1.0, 2.0) and their hydrides (hydrogen concentration n = 1.0) are found to crystallize in C15 cubic Laves phase. While the x = 0.5 and 1.0 materials and their hydrides have Curie temperatures above 300 K, the x = 2.0 material and its hydride are paramagnetic at 300 K. The magnetization measurements carried out at 300 K showed large anisotropy and remanence for hydrides of both x = 0.5 and 1.0 and these are found to be further enhanced at 24 K. These results are discussed on the basis of rhombohedral distortions of the crystal lattice. The magnetic moments of the hydrides are found to be less than those of the unhydrided materials.read more
Citations
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Journal ArticleDOI
Spin–flip metamagnetism in the laves phase compounds Dy0.73Tb0.27Fe2−xCoxHn
TL;DR: In this article, the results of low temperature magnetization measurements carried out on the Dy 0.73 Tb 0.27 Fe 2− x Co x system and their hydrogenated compounds are presented.
Journal ArticleDOI
Electrical resistivity, Curie temperature and band structure in Tb0.27Dy0.73(Fe1−xCox)2 intermetallics
TL;DR: In this paper, the magnetic contribution to electrical resistivity is applied to estimate Curie temperatures, and the Curie temperature increases with x, approaches a maximum for x ǫ = 0.3 and reduces across the rest of the series.
Book ChapterDOI
Rare Earth Transition Metal Based Giant Magnetostrictive Materials: An Interdisciplinary Perspective
TL;DR: In this paper , the evolution of microstructure and texture upon directional solidification in rare earth transition metal based RFe2 type alloys has been addressed and the effect of alloying addition on the microstructures and magnetostrictive properties has been also presented.
References
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Journal ArticleDOI
Hydrides formed from intermetallic compounds of two transition metals: a special class of ternary alloys
TL;DR: In this paper, the authors review available experimental information on the existence, thermodynamic stability and physical properties of hydrides formed by the absorption of hydrogen gas in intermetallic compounds of two transition metals.
Journal ArticleDOI
Effect of hydrogen absorption on the magnetic properties of YFe2 and GdFe2
K.H.J. Buschow,A. M. van Diepen +1 more
TL;DR: The change in the magnetic properties of the compounds YFe 2 and GdFe 2 upon hydrogen absorption has been studied by means of magnetic measurements and by Mossbauer effect measurements as mentioned in this paper.
Journal ArticleDOI
Effect of H2 absorption on the magnetic properties of rare‐earth transition metal compounds
K. H. J. Buschow,R. C. Sherwood +1 more
Abstract: Rare‐earth transition metal compounds are known to be able to (reversibly) absorb large quantities of hydrogen gas at moderate pressures. This absorption of H2 gas leads to substantial changes of the magnetic properties. These include hydrogen induced transitions from Pauli paramagnetism to ferromagnetism. Examples also exist of the reverse effect, i.e., where in ferromagnetic compounds the 3d moment disappears upon hydrogen absorption. The changes in magnetic properties, together with experimental results of X‐ray diffraction and Mossbauer‐effect spectroscopy are discussed in terms of charge transfer and changes in interatomic distances. The metastable character of the ternary hydrides often leads to a loss of the long range atomic order upon hydrogen absorption. This affects not only the absorption capacity (after repeated cycling) but also influences the magnetic behavior. Examples are shown where the atomic disorder has led to pronounced thermomagnetic history effects.
Journal ArticleDOI
Magnetic properties, electrical resistivity and thermal expansion of (Ho,Y)Co2
TL;DR: In this paper, the influence of Ho substitution on the Co moments in (HoxY1-x)Co2 has been investigated by means of magnetic, resistivity and lattice parameter measurements.