Abstract
Several systems of nanocomposlte thin films have been prepared by plasma sputtering and heat treatment. By choosing suitable multilayer structures of the as-deposited films and subsequent heat-treatment processes, the nanostructures of the films have been tailored. The thermal processing is the key to control the morphology. Appropriate heat-treatment processes have been found for the systems studied, which result in the desired nanostructures. For the first time a nearly ideal nanostructure with the soft-phase grains embedded homogeneously in the hard phase grains has been obtained for the FePt-Fe1-xPtx(x-0.3) system. Effective intergrain exchange coupling has been realized. As a consequence, high energy products up to 50 MGOe have been achieved.
Original language | English (US) |
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Pages (from-to) | 3241-3246 |
Number of pages | 6 |
Journal | IEEE Transactions on Magnetics |
Volume | 35 |
Issue number | 5 PART 2 |
DOIs | |
State | Published - 1999 |
Keywords
- Exchange coupling
- Heat treatment
- Permanent magnets
- Thin films
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering