Effects of Cu doping on the microstructure and magnetic properties of CoPt nanowires

Ji Hyun Min, Boo Hyun An, Ji Ung Cho, Hye Min Ji, Su Jung Noh, Young-geun Kim, Hong Ling Liu, Jun Hua Wu, Young Dong Ko, Jin Seok Chung

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We studied the effects of copper doping on the microstructure and magnetic properties of CoPt nanowires fabricated in anodized aluminium oxide (AAO) nanotemplates by electrodeposition. The morphological observation indicates well-formed CoPt and CoPtCu nanowires, while the structural analysis shows that fcc- Co3 Pt phase exists prior to annealing and is retained in the doped nanowires, with minor hcp-CoPt phase postannealing. The doping causes shrinkage of the lattice spacing prior to annealing due to the insertion of smaller copper atoms. Compared to the undoped CoPt nanowires, the magnetic measurements reveal significant enhancement in the magnetic properties of the CoPtCu nanowire postannealing, resulting in the more rapid increase in the coercivity with annealing temperature.

Original languageEnglish
Article number09K513
JournalJournal of Applied Physics
Volume101
Issue number9
DOIs
Publication statusPublished - 2007 May 21

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nanowires
magnetic properties
microstructure
annealing
copper
shrinkage
structural analysis
electrodeposition
magnetic measurement
coercivity
insertion
aluminum oxides
spacing
augmentation
causes
atoms
temperature

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Min, J. H., An, B. H., Cho, J. U., Ji, H. M., Noh, S. J., Kim, Y., ... Chung, J. S. (2007). Effects of Cu doping on the microstructure and magnetic properties of CoPt nanowires. Journal of Applied Physics, 101(9), [09K513]. https://doi.org/10.1063/1.2710321

Effects of Cu doping on the microstructure and magnetic properties of CoPt nanowires. / Min, Ji Hyun; An, Boo Hyun; Cho, Ji Ung; Ji, Hye Min; Noh, Su Jung; Kim, Young-geun; Liu, Hong Ling; Wu, Jun Hua; Ko, Young Dong; Chung, Jin Seok.

In: Journal of Applied Physics, Vol. 101, No. 9, 09K513, 21.05.2007.

Research output: Contribution to journalArticle

Min, JH, An, BH, Cho, JU, Ji, HM, Noh, SJ, Kim, Y, Liu, HL, Wu, JH, Ko, YD & Chung, JS 2007, 'Effects of Cu doping on the microstructure and magnetic properties of CoPt nanowires', Journal of Applied Physics, vol. 101, no. 9, 09K513. https://doi.org/10.1063/1.2710321
Min, Ji Hyun ; An, Boo Hyun ; Cho, Ji Ung ; Ji, Hye Min ; Noh, Su Jung ; Kim, Young-geun ; Liu, Hong Ling ; Wu, Jun Hua ; Ko, Young Dong ; Chung, Jin Seok. / Effects of Cu doping on the microstructure and magnetic properties of CoPt nanowires. In: Journal of Applied Physics. 2007 ; Vol. 101, No. 9.
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