Theoretical consideration of the stability of an L10 magnetic phase in Fe-(Pd, Pt) alloy clusters

S. Fukami, N. Tanaka

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Size effects on the order-disorder transition of binary alloy clusters, particularly Fe-(Pd, Pt) clusters, are studied theoretically, based on the theory of Bragg and Williams. Including the broken bonds at surfaces (interfaces) of the clusters, the relationship between the degree of order and the cluster size, which has recently been suggested from various experimental studies, is formulated. The dependences of the critical size on the temperature and the order-disorder transformation temperature on the cluster size are derived. There is a slight quantitative disagreement with experiment, but this may be improved by considering some modification of higher-order terms.

Original languageEnglish
Pages (from-to)33-40
Number of pages8
JournalPhilosophical Magazine Letters
Volume84
Issue number1
DOIs
Publication statusPublished - 2004 Jan
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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