We have prepared nanometer-size, isolated CoPt particles. The particles in the range of 100-300 nm in diameter were formed by annealing thin films in the temperature range of 550-800 °C. Films with magnetic coercivity as high as 30 kOe were achieved. The results indicate that the high magnetic coercivity was obtained because the crystallite size approaches that of noninteracting single-domain particles.
ASJC Scopus subject areas
- Physics and Astronomy(all)