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An experimental investigation of dynamic behavior in FePt systems
Citation
Fuller, RO and Koutsantonis, GA and Stamps, RL, An experimental investigation of dynamic behavior in FePt systems, Journal of Physics: Condensed Matter, 21, (12) Article 124203. ISSN 0953-8984 (2009) [Refereed Article]
Copyright Statement
© 2009 IOP Publishing Ltd
DOI: doi:10.1088/0953-8984/21/12/124203
Abstract
Magnetic relaxation experiments have been used to investigate the non-equilibrium dynamics of FePt nanoparticles. The system exhibits ageing at low temperatures, as well as a narrow energy distribution of the barrier to reversal. These properties were found susceptible to being affected by particle size, matrix and applied field strength. An analysis based on broad rate distributions is presented and compared with results obtained using energy barrier and viscosity interpretations. We find that a single broad distribution of relaxation times suggestive of cooperative effects is sufficient to explain the experimental results.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | FePt, nanoparticles, magnetic relaxation, iron platinum |
| Research Division: | Chemical Sciences |
| Research Group: | Macromolecular and materials chemistry |
| Research Field: | Nanochemistry |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding knowledge |
| Objective Field: | Expanding knowledge in the chemical sciences |
| UTAS Author: | Fuller, RO (Dr Rebecca Fuller) |
| ID Code: | 153934 |
| Year Published: | 2009 |
| Web of Science® Times Cited: | 3 |
| Deposited By: | Chemistry |
| Deposited On: | 2022-10-17 |
| Last Modified: | 2022-11-17 |
| Downloads: | 0 |
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