Anomalous magnetic hysteresis in an amorphous Nd5 4Co36B10 alloy

G. C. Hadjipanayis, S. H. Aly, D. J. Sellmyer

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

The hysteresis and crystallization behavior of an amorphous Nd 54Co36B10 alloy have been examined over a range of temperatures. Crystallization studies show a glass transition temperature around 210 °C, two crystallization peaks at around 220 and 360 °C, and two endothermic peaks at around 530 and 600 °C, respectively. ac susceptibility measurements show an ordering temperature of 38 K for the amorphous phase. Four additional magnetic phases have been observed in the crystallized samples with ordering temperatures 17, 45, 90, and 190 K, respectively. Magnetic measurements on melt-spun ribbons reveal a coercivity of 6 kOe at 4.2 K. The coercivity at 4.2 K of a sample heat treated at the first crystallization temperature is increased to 8 kOe but is reduced gradually upon annealing at higher temperatures and is only 2.5 kOe in a sample annealed at a temperature close to the second endothermic peak.

Original languageEnglish (US)
Pages (from-to)4133-4135
Number of pages3
JournalJournal of Applied Physics
Volume57
Issue number8
DOIs
StatePublished - 1985

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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