High field magnetization study and analysis of magnetic interactions in Dy sub(2 )Fe sub(17-x)Ga sub(x) (x = 5-8) compounds

High field magnetization study and analysis of magnetic interactions in Dy sub(2 )Fe sub(17-x)Ga sub(x) (x = 5-8) compounds

High field magnetization measurements (up to 38T) were carried out at 4.2 K on "free powder" samples from Dy sub(2)Fe sub(17-x)Ga sub(x) (x = 5-8) compounds. The data were used to evaluate the microscopic exchange parameter, J sub(DyFe). Its value was also obtained by mean-field analysis o...

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Veröffentlicht in:Journal of magnetism and magnetic materials 2001-06, Vol.231 (2-3), p.157-161
Hauptverfasser: Sheloudko, N, Gilewski, A, Rao, X-L, Skumryev, V, Munoz, J S
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Sprache:eng
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Zusammenfassung:High field magnetization measurements (up to 38T) were carried out at 4.2 K on "free powder" samples from Dy sub(2)Fe sub(17-x)Ga sub(x) (x = 5-8) compounds. The data were used to evaluate the microscopic exchange parameter, J sub(DyFe). Its value was also obtained by mean-field analysis of Curie temperatures, T sub(c), in agreement with the high-field data. The obtained results reveal an increase of J sub(DyFe) above x = 6 that can be correlated with the observed change in T sub(c) vs. x for Dy sub(2)Fe sub(17-x)Ga sub(x) compounds and their counterparts with Y. copyright 2001 Published by Elsevier Science B.V.
ISSN:0304-8853