Unusual magnetic behaviour of hcp-Co on bcc-V, Cr, and Mo

C. K. Lo*, I. Klik, C. P. Chang, Y. Liou, C. S. Yang, Y. D. Yao, J. A.C. Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Co/X (X = V, Cr, Mo) bilayers were prepared on MgO(110) by MBE. Their structure was determined, by in situ RHEED and ex situ X-ray, as hcp-Co on bcc-X(211). The Co thickness was 200 Å and X thickness varied between 6 and 100 Å. AFM images revealed surface topography characterized by oblong grains. Magnetization reversal was examined ex situ, at room temperature, by angular MOKE measurements which showed strong in-plane uniaxial anisotropy. The angular dependence of coercivity agrees well with a modified Kondoroski model, suggesting that magnetization reversal is due to domain wall motion and the squareness of the loops shows that wall pinning is virtually absent. The reversal process is consistent with an in-plane Co columnar structure and the existence of very square minor loops suggests that these columns can be switched individually.

Original languageEnglish
Pages (from-to)160-164
Number of pages5
JournalApplied Surface Science
Publication statusPublished - 1997 Apr
Externally publishedYes


  • Domain wall motion
  • Magnetic hysteresis
  • Magnetic thin films

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • General Physics and Astronomy
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


Dive into the research topics of 'Unusual magnetic behaviour of hcp-Co on bcc-V, Cr, and Mo'. Together they form a unique fingerprint.

Cite this