Document Type
Article
Source Publication Title
Applied Physics Letters; Proceedings of the 53rd Annual Conference on Magnetism and Magnetic Materials. Hard Magnetic Materials
Abstract
: FePt nanocrystals were prepared by simultaneous reduction of platinum acetylacetonate and thermal decomposition of iron pentacarbonyl in properly chosen solvents/surfactants. A variety of FePt nanocrystals, including nanowires, nanorods, nanocubes, and nanosized multipods, were successfully obtained. The shape control was realized by simply varying synthesis parameters. The as-synthesized nanocrystals, having chemically disordered fcc structure, are found to be superparamagnetic at room temperature and their ferromagnetic-superparamagnetic transition temperature is size dependent that increases with particle size. The as-synthesized FePt nanocrystals were transformed to the chemically ordered L10 structure upon heat treatment, which exhibits hard magnetic properties with coercivity as high as 25 kOe.
Disciplines
Physical Sciences and Mathematics | Physics
Publication Date
4-6-2009
Language
English
License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.
Recommended Citation
Poudyal, Narayan; Chaubey, Girija Shankar; Rong, Chuan-Bing; and Liu, J. Ping, "Shape control of FePt nanocrystals" (2009). Physics Faculty Publications. 12.
https://mavmatrix.uta.edu/physics_facpubs/12