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Extended X-ray absorption fine structure studies of magnetic nanoparticles

Published online by Cambridge University Press:  27 April 2011

A. Agarwal ,
M. K. Singh ,
T. Kaneko ,
S.-I. Nagamatsu ,
T. Konishi  and
T. Fujikawa
A. Agarwal*
Affiliation:
Department of Physics, M. N. National Institute of Technology, Allahabad 211004, India
M. K. Singh
Affiliation:
Department of Physics, M. N. National Institute of Technology, Allahabad 211004, India
T. Kaneko
Affiliation:
Graduate School of Advanced Integration Science, Chiba University, Yayoi-cho 1-33, Inage, Chiba 263-8522, Japan
S.-I. Nagamatsu
Affiliation:
Graduate School of Advanced Integration Science, Chiba University, Yayoi-cho 1-33, Inage, Chiba 263-8522, Japan
T. Konishi
Affiliation:
Graduate School of Advanced Integration Science, Chiba University, Yayoi-cho 1-33, Inage, Chiba 263-8522, Japan
T. Fujikawa
Affiliation:
Graduate School of Advanced Integration Science, Chiba University, Yayoi-cho 1-33, Inage, Chiba 263-8522, Japan
*
†Email address for correspondence: arvind.aarvind@gmail.com
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Abstract

We have synthesized nickel by means of pulsed laser ablation. A nickel disc was used for ablation with the focused output of fundamental harmonic from Nd:YAG laser. X-ray diffraction result shows that the synthesized nanoparticles are of pure metallic nickel with a face-centred cubic structure and the average particle size is 35 nm. The extended X-ray absorption fine structure (EXAFS) studies of pure nickel foil and the synthesized nanoparticles show similar structures. The position of the main peak is same in these nanoparticles with reference to the nickel foil. The only difference was observed in the reduction of the amplitude. The nearest-neighbour distance is similar as for pure nickel foil. The Debye–Waller factor is also similar. There is no trace of oxide and hydroxide in the EXAFS data, suggesting that the synthesized nanoparticles contain only nickel metal.

Type
Poster paper
Information
Diamond Light Source Proceedings , Volume 1 , Issue SRMS-7 , October 2010 , e142
Copyright
Copyright © Diamond Light Source Ltd 2011

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References

REFERENCES

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