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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.19 [2012] >
IJEMS Vol.19(5) [October 2012] >
| Title: | Composition study of FePt nanoparticles synthesized from modified polyol process |
| Authors: | Chokprasombat, K
Harding, P
Sirisathitkul, C
Muthitamongkol, P
Pinitsoontorn, S |
| Keywords: | Magnetic nanoparticle
FePt
Modified polyol process
Metal acetylacetonate
Molar ratio |
| Issue Date: | Oct-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Five different conditions
for modified polyol processes using iron(III) acetylacetonate and platinum(II)
acetylacetonate as starting materials reveal significantly different products
in terms of composition. The initial Fe:Pt molar ratio is not retained in the
final products and Pt-rich nanoparticles are obtained from 1:1 molar ratio of
Fe:Pt sources. The imbalance between Fe and Pt indicate that the nanoparticles
formation can be explained by the heterocoagulation mechanism rather than the
binary nucleation model. The increase in refluxing time and initial Fe:Pt molar
ratio improved the amount of Fe in nanoparticles. However, the highest molar
ratio of 3:1 apparently affected the uniformity of particles. The co-existence
of iron oxide and Pt-rich nanoparticles is clearly evident in the case of 3:1
molar ratio combined with 1,2 hexadecanediol as a reducing agent.
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| Page(s): | 338-342 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.19(5) [October 2012]
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