Nanostructure of exchange coupled hard/soft FePt composite films

Y. Liu, J. P. Liu, D. J. Sellmyer

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


Multilayers of Fe and Pt were deposited by sputtering. The ratio of the thickness of Fe to Pt was adjusted such that stoichiometric FePt and Fe rich films were formed. These films were either annealed at 500°C and above, or processed by rapid thermal annealing (RTA) using a high power lamp. Both the Fe and Pt in the as-deposited films were found to be FCC structure. After heat treatment, L10 phase (hard phase) and disordered FCC phase (soft phase) were identified in Fe-rich films. Small precipitates of 3-8 nm in the matrix which has larger grains of about 50-200 nm are observed. Perfect coherent interface between the hard phase and soft phase is observed. Processing route, microstructure and properties relation will be discussed.

Original languageEnglish (US)
Pages (from-to)1027-1030
Number of pages4
JournalNanostructured Materials
Issue number5
StatePublished - 1999
EventProceedings of the 1998 4th International Conference on Nanostructured Materials (NANO '98) - Stockholm, Swed
Duration: Jun 14 1998Jun 19 1998

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics


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