Magnetism and Radio-Frequency Dynamics in Nanocomposite Materials

H. Srikanth; P. Poddar

doi:10.4028/www.scientific.net/JMNM.23.355

Paper Titles

Experimental Investigation and Monte Carlo Simulation of Glass Transition in Polymer Nanocomposites
p.339

Gold Nanoparticles on Polymeric Micro Beads: A One-Pot Synthesis and Characterization by X-Ray Absorption Near Edge Structure (XANES) Spectroscopy
p.343

Investigation into the Effects of Transformer Oil on Fluoro Poly(ether imide)s and their Nanocomposites Films
p.347

Investigation of Amorphous Silicon-Carbon Films Deposited by Filtered Vacuum Cathodic Arc
p.351

Magnetism and Radio-Frequency Dynamics in Nanocomposite Materials
p.355

Material Characterization Based on Instrumented Indentation
p.359

Nanoindentation Study of Polymer Based Nanocomposites
p.363

Nonlinear Optical Behavior of Transparent Nanohybrids of Nanocrystalline TiO₂ in Poly(methyl methacrylate) Prepared by In Situ Sol-Gel Polymerization Technique
p.367

Processing of Bulk Nanostructured Metal, Polymer/Clay Nanocomposites and Nano Ceramic Powder
p.371

HomeJournal of Metastable and Nanocrystalline...Journal of Metastable and Nanocrystalline...Magnetism and Radio-Frequency Dynamics in...

Magnetism and Radio-Frequency Dynamics in Nanocomposite Materials

Abstract:

Nanocomposites hold tremendous potential as ‘designer’ materials with multifunctional, tunable physical properties. We have synthesized and studied two classes of nanocomposite systems –(a) Magnetorhelogical (MR) fluids with uniformly dispersed Fe nanoparticles and (b) Polypyrrole doped with soft ferrite nanoparticles. Static and dynamic magnetic measurements show a variety of phenomena ranging from superparamagnetism to collective spin-flip transitions. A resonant RF method has been used to map the switching and anisotropy fields. Our studies indicate that the rich cooperative magnetism in these systems is governed not only by the particle size distribution but also by the matrix-mediated interactions.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Journal of Metastable and Nanocrystalline Materials (Volume 23)

Pages:

355-358

DOI:

https://doi.org/10.4028/www.scientific.net/JMNM.23.355

Citation:

Cite this paper

Online since:

January 2005

Authors:

H. Srikanth, P. Poddar

Keywords:

Conducting Polymer, Magnetic Nanoparticle, Nanocomposite

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] A. Heilmann: Polymer films with embedded metal nanoparticles (Springer, New York 2003).

Google Scholar

[2] H. Srikanth, R. Hajndl, C. Chirinos, J. Sanders, A. Sampath, and T. S. Sudarshan: Appl. Phys. Lett. Vol. 79 (2001), p.3503.

DOI: 10.1063/1.1419237

Google Scholar

[3] M. Matsumoto, and Y. Miyata: J. Appl. Phys. Vol. 91 (2002), p.9635.

Google Scholar

[4] B. Berkovsky and V. Bashtovoy: Magnetic Fluids and Applications Handbook (Begell Home Inc., 1996).

Google Scholar

[5] R. K. Kalyanaraman, M. S. Krupashankara, T. S. Sudarshan, and R. Dowding: Nanostruct. Mater. Vol. 10 (1999), p.1379.

Google Scholar

[6] S. Calvin, E. E. Carpenter, V. G. Harris and S. A. Morrison: Appl. Phys. Lett. Vol. 81 (2002), p.3828.

Google Scholar

[7] O. J. Murphy, G. D. Hitchens, D. Hodko, E. T. Clarke, D. L. Miller and D. L. Parker: US Patent 5, 855, 755 (1999).

Google Scholar

[8] H. Srikanth, J. Wiggins, and H. Rees: Rev. Sci. Instrum. Vol. 07 (1999), p.3097.

Google Scholar

[9] G. C. Hadjipanayis: J. Magn. Magn. Mater. Vol. 200 (1999), p.373.

Google Scholar

[10] P. Poddar, T. Shafir, T. Fried and G. Markovich: Phys. Rev. B Vol. 66 (2002), p. 060403R Fig. 5 Transverse susceptibility scans for MZFO particles in wax.

Google Scholar