Morphological change in FePt nanogranular films induced by irradiation with 100 keV He ions

S. Matsumura, T. Horiuchi, K. Yasuda, K. Kaneko, M. Watanabe, T. Masumoto

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

We have investigated the effects of He-ion irradiation on structures of FePt nanoparticles dispersed in thin films with amorphous Al2O 3 matrix. The coarsening of FePt nanoparticles is suppressed under irradiation with 100 keV He+ ions at an elevated temperature, such as 923 K. The delay of particle growth is also recognized in the post-irradiation annealing. On the other hand, He-irradiation is of little assistance in promoting L10 ordering in the nanogranular films at a temperature as low as 573 K.

Original languageEnglish
Pages (from-to)441-445
Number of pages5
JournalScripta Materialia
Volume53
Issue number4
DOIs
Publication statusPublished - Aug 2005

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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