The magnetization behavior of melt-spun FeDy-B alloys

K. S. Kim, J. M. Lee, J. K. Jeung, Y. M. Moon, S. C. Yu, S. H. Lim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We report the salient features of the magnetization behavior of melt-spun ribbons of (Dy0.33Fe0.67)1-xBx with x = 0, 0.05, 0.1 and 0.15 alloys. The temperature dependence of magnetization and low-temperature hysteresis loops were measured using a vibrating sample magnetometer during heating from 5 to 900 K, with an applied field of 50 kOe. Our results show that the addition of B seems to decrease the magnetic order and hence to decrease the exchange stiffness and the Curie temperature. Very large values of the coercive force at a low temperature of 5 K, ranging from 19 800 to 22 900 Oe, was observed. The rapid increase of the coercive force at low temperatures is explained by the topological disorder due to the presence of rare earth spins distributed randomly.

Original languageEnglish
Pages (from-to)1168-1170
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume226-230
Issue numberPART II
DOIs
Publication statusPublished - 2001
Externally publishedYes

Keywords

  • Coercive force
  • Exchange stiffness
  • Magnetization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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