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Applied Science and Convergence Technology 2011; 20(1): 7-13

Published online January 1, 2011

Copyright © The Korean Vacuum Society.

Study on Formation of FePd Nano-dot Using Agglomeration of Fe/Au Bilayer

J. K. Koo , J. M. Kim , D. H. Ryu , B. J. Choi , D. W. Kim , D. H. Lee , U. I. Kim , S. Mitani , M. Kamiko , J. G. Haa

Abstract

L1? phase FePd nano-dot structures were successfully fabricated on self-organized Fe/Au bilayers. With atomic force microscopy, it is determined that surface morphologies of initially flat Fe/Au bilayer films were agglomerated and transformed their shape into nano-dots structures with increasing annealing temperature. With this bilayer as a template, FePd multilayers were deposited at various temperatures, i.e. 300℃, 350℃, 400℃, and 450℃. Surface morphologies of FePd superlattice had a near resemblance to self-organized bilayer. According to X-ray diffraction results, it is confirmed that L1? superlattice structures of FePd were obtained from samples which were annealed above 350℃. Results of X-ray photoelectron spectroscopy depth-profile analysis showed that chemical composition is identical to deposition sequence. As a result, without additional etching processes, fabrication of chemically ordered FePd superlattice nano-dots was achieved.

Keywords: 자기조립화,응집현상,FePd 초격자,나노 점,Self-organization,Agglomeration,FePd superlattice,Nano-dot

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