Elsevier, Journal of Magnetism and Magnetic Materials, (284), p. 336-341
DOI: 10.1016/j.jmmm.2004.07.011
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Two approaches attempted to overcome FePt nanoparticle sintering during the transformation to the high coercivity L10 phase, which currently limits the use of these nanoparticles in data storage media. High-pressure treatment of dilute nanoparticle solutions failed to prevent sintering due to surfactant decomposition above 360 °C. By pre-annealing nanoparticle monolayers to decompose the surfactant, and then coating with an immiscible SiO2 matrix, sintering was prevented with annealing temperatures up to 700 °C.