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Title: Magnetic properties of Ho1-xMmxCo2 (x=0, 0.1, 0.2, 0.3 and 0.4) alloys and their hydrides
Authors: Srinivas, G.
Sankaranarayanan, V.
Ramaprabhu, S.
Keywords: Charge transfer; Hydrides; Magnetic properties; Magnetization; Ac Susceptibility; Temperature dependence; Holmium alloys
Issue Date: 2008
Citation: Journal of Magnetism and Magnetic Materials, 320(18), 2237-2240
Abstract: The influence of Mm (Mm=mischmetal) substitution and hydrogen absorption on the magnetic properties of Ho1-xMmxCo2 (x=0, 0.1, 0.2, 0.3 and 0.4) alloys have been determined through the temperature dependence of ac susceptibility and thermopower measurements. The changes in magnetic-ordering temperature of Ho1-xMmxCo2 alloys have been explained based on the dilution of the magnetic ions and weakening of 4f-3d exchange interactions. The gradual disappearance of the magnetic transition temperature upon increasing hydrogen concentration (y) has been interpreted by the lattice expansion and charge transfer between absorbed hydrogen and 3d-band of Ho1-xMmxCo2. � 2008.
ISSN: 3048853
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