Document Type
Article
Source Publication Title
IEEE Transactions on Nanotechnology
First Page
437
Last Page
443
Abstract
Isolated monodisperse L1[subscript]0 FePt nanoparticles coated by carbon were obtained by adding enough surfactants that decomposed into carbon after the chemical synthesis and postannealing of the A1 FePt nanoparticles. The effect of isolation between FePt nanoparticles on the phase transition temperature and magnetic properties has been studied systematically by thermal, magnetic, and structural characterizations and analyses. It was found that the A1 to L10 phase transition temperature is dependent sensitively on the amount of isolation medium. The transition temperature shift reaches 150-200degC from nonisolated particle assemblies to completely isolated particles, which may be attributed to the high activation energy of the phase transformation for the isolated particles.
Disciplines
Physical Sciences and Mathematics | Physics
Publication Date
3-31-2009
Language
English
License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.
Recommended Citation
Liu, J. Ping; Rong, Chuan-Bing; Nandwana, Vikas; Poudyal, Narayan; and Chaubey, Girija Shankar, "Phase Transformation and Magnetic Hardening in Isolated FePt Nanoparticles" (2009). Physics Faculty Publications. 10.
https://mavmatrix.uta.edu/physics_facpubs/10