Effect of structural transition on the temperature-dependent magnetic properties of epitaxial FePd alloy nanoparticles

Hiroshi Naganuma, Kazuhisa Sato, Yoshihiko Hirotsu

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We have studied atomic ordering and magnetic properties of epitaxial FePd nanoparticles 3-14 nm in diameter. Thermal fluctuation of magnetic moment of L10-FePd nanoparticles becomes prominent when particle size is smaller than about 8 nm. Atomic images of high-resolution transmission electron microscopy revealed the formation of the ordered phase in FePd nanoparticles as small as 4 nm in diameter, while the superlattice reflections were quite weak compared to those of the larger sized particles (>8nm). The experimental results indicate that the degradation of magnetic anisotropy is induced by the size-dependent decay of long-range atomic order.

Original languageEnglish
Article number012042
JournalJournal of Physics: Conference Series
Volume266
Issue number1
DOIs
Publication statusPublished - 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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