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Direct Synthesis of L10-Phase Nanostructured CoPt Using Dense Plasma Focus Device Operating in Non-optimized Focus Mode

Published online by Cambridge University Press:  01 February 2011

Zhenying Pan ,
Rajdeep Singh Rawat ,
Jiaji Lin ,
Shumaila Karamat ,
Paul Choon Keat Lee ,
Stuart Victor Springham  and
Augustine Tuck Lee Tan
Zhenying Pan
Affiliation:
pzhying@gmail.compzhying@qq.com
Rajdeep Singh Rawat
Affiliation:
rajdeep.rawat@nie.edu.sg, National Institute of Education, Natural Science and Science Education, 1 Nanyang Walk, Singapore, Singapore, 637616, Singapore
Jiaji Lin
Affiliation:
jiaji.lin@nus.edu.sg, Solar Energy Research Institute of Singapore, Singapore, Singapore
Shumaila Karamat
Affiliation:
shumailakaramat@gmail.com, National Institute of Education, Natural Science and Science Education, 1 Nanyang Walk, Singapore, Singapore, 637616, Singapore
Paul Choon Keat Lee
Affiliation:
paul.lee@nie.edu.sg, National Institute of Education, Natural Science and Science Education, 1 Nanyang Walk, Singapore, Singapore, 637616, Singapore
Stuart Victor Springham
Affiliation:
stuart.springham@nie.edu.sg, National Institute of Education, Natural Science and Science Education, 1 Nanyang Walk, Singapore, Singapore, 637616, Singapore
Augustine Tuck Lee Tan
Affiliation:
augustine.tan@nie.edu.sg, National Institute of Education, Natural Science and Science Education, 1 Nanyang Walk, Singapore, Singapore, 637616, Singapore
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Abstract

A direct synthesis of (001) oriented nanostructured CoPt thin films has been successfully achieved using a 880 J pulsed Dense Plasma Focus (DPF) device operating in a non-optimized focus mode with a low charging voltage of about 8 kV. The (001) oriented fct structured L10 phase nanostructured CoPt thin films have been synthesized directly in as-deposited sample, as verified by XRD results, without any post deposition annealing. The SEM imaging results show that nanostructured CoPt were achieved in non-optimized focus mode with agglomerate/particle size ranging from 10 to 55 nm. Furthermore, the VSM analysis shows that the as-deposited samples in non-optimized focus mode have higher coercivity (due to direct L10 phase) as compared the annealed sample and the as-deposited sample of optimized focus mode operation.

Keywords

thin filmplasma depositionnanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1250: Symposium G – Materials and Physics for Nonvolatile Memories II , 2010 , 1250-G08-04
Copyright
Copyright © Materials Research Society 2010

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