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Intercluster Interaction and Magnetic Interaction between Iron Core and Iron Oxide Shell in Core-Shell Nanoclusters

Published online by Cambridge University Press:  12 January 2012

Maninder Kaur ,
Qi Yao  and
You Qiang
Maninder Kaur
Affiliation:
Department of Physics and Environmental Science Program, University of Idaho, Moscow, ID 83844. U.S.A.
Qi Yao
Affiliation:
Department of Physics and Environmental Science Program, University of Idaho, Moscow, ID 83844. U.S.A.
You Qiang
Affiliation:
Department of Physics and Environmental Science Program, University of Idaho, Moscow, ID 83844. U.S.A.
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Abstract

The intercluster interactions of iron/iron oxide core shell nanoclusters have been investigated, and their dependence on cluster size (d) has been discussed. A cluster deposition system is used to prepare core-shell nanoclusters with different d, varying from 9 to 14 nm.Transmission Electron Microscopy has been used for physical characterization, and Vibrating Sample Magnetometer for magnetic study. The cluster – cluster interactions have been investigated by field dependent isothermal remanent magnetization (IRM) and dc demagnetization (DCD) measurements at room temperature. Henkel plot shows more negative deviation from non- interacting case for bigger size nanoclusters than smaller size clusters.

Keywords

cluster assemblycore/shellferromagnetic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1406: Symposium Z – Functional Metal-Oxide Nanostructures , 2012 , mrsf11-1406-z18-35
Copyright
Copyright © Materials Research Society 2012

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References

REFERENCES

[1] Fiorani, D., Surface effects in magnetic nanoparticles. Springer, 2005.Google Scholar
[2] Pankhurst, Q. A., Connolly, J., Jones, S. K., and Dobson, J., “Applications of magnetic nanoparticles in biomedicine,” J. of Physics D: Applied Physics, vol. 36, p. R167–R181, Jul. 2003.Google Scholar
[3] Qiang, Y., Antony, J., Sharma, A., Nutting, J., Sikes, D., and Meyer, D., “Iron/iron oxide core-shell nanoclusters for biomedical applications,” J. of Nanoparticle Research, vol. 8, pp. 489–496, Oct. 2005.Google Scholar
[4] Antony, J., Qiang, Y., Baer, D. R., and Wang, C., “Synthesis and characterization of stable iron-iron oxide core-shell nanoclusters for environmental applications,” J. of Nanoscience and Nanotechnology, vol. 6, no. 2, pp. 568–572, Feb. 2006.Google Scholar
[5] Wang, C. M., Baer, D. R., Amonette, J. E., Engelhard, M. H., Antony, J. J., and Qiang, Y., “Electron beam-induced thickening of the protective oxide layer around Fe nanoparticles,” Ultramicroscopy, vol. 108, no. 1, pp. 43–51, Dec. 2007.Google Scholar
[6] Wang, C. M., Baer, D. R., Amonette, J. E., Engelhard, M. H., Qiang, Y., and Antony, J., “Morphology and oxide shell structure of iron nanoparticles grown by sputter-gas-aggregation,” Nanotechnology, vol. 18, p. 255603, Jun. 2007.Google Scholar
[7] Wang, C. M. et al. ., “Void formation during early stages of passivation: Initial oxidation of iron nanoparticles at room temperature,” J. of Applied Physics, vol. 98, p. 094308, 2005.Google Scholar
[8] Pankhurst, Q. A. and Pollard, R. J., “Origin of the spin-canting anomaly in small ferrimagnetic particles,” Physical Review Letters, vol. 67, no. 2, p. 248, Jul. 1991.Google Scholar