Effect of the buffer layer on the magnetic properties in CoFe/Pd multilayers

Joohyung Bae, Hyung jun Kim, Joonyeon Chang, Suk Hee Han, Hyun Cheol Koo, Sang Ho Lim

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

CoFe/Pd multilayers overcome the shape anisotropy and clearly show perpendicular magnetization. The thickness of the Pd buffer layer determines the coerciviy of the multilayer without reducing the magnetic moment. While the coercivity is 0. 18 kOe without a buffer layer, the coercivity becomes 0. 93 kOe with a 20 nm buffer layer. The coercivity linearly increases with increasing thickness of the buffer layer. When the buffer thickness is increased, the surface of the multilayer becomes rougher, which induces pinning site and increases the coercivity. The CoFe/Pd multilayer with a Au buffer layer has a larger coercivity than that with a Pd buffer layer because the Au buffer layer has a much rougher surface.

Original languageEnglish
Pages (from-to)1500-1504
Number of pages5
JournalJournal of the Korean Physical Society
Volume61
Issue number9
DOIs
Publication statusPublished - 2012 Nov

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (Ministry of Education, Science and Technology) (No. 2012-0005631) and the KIST Institutional Program.

Keywords

  • Buffer layer
  • CoFe/Pd multilayer
  • Perpendicular magnetization

ASJC Scopus subject areas

  • General Physics and Astronomy

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