Variation of the magnetic energy barrier with the cell shape of nanostructured magnetic thin films

C. W. Han, Sang Ho Lim

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The variation of the magnetic energy barrier of nanostructured single-layered thin films according to the cell shape is calculated by a micromagnetic simulation. The magnetic energy barrier increases significantly as the cell shape varies from a rectangle to an ellipse. This behaviour, which can raise a serious reliability issue considering the difficulty in the precise shape control of the nanostructured cells, is due to the fact that the magnetization process occurs in a more coherent way as the cell shape more closely resembles an ellipse. The simple assumption of the single domain state significantly overestimates the magnetic energy barrier, in particular, near the rectangular geometry.

Original languageEnglish
Article number045006
JournalJournal of Physics D: Applied Physics
Volume42
Issue number4
DOIs
Publication statusPublished - 2009 Jul 14

Fingerprint

Magnetic thin films
Energy barriers
ellipses
thin films
cells
shape control
energy
rectangles
Magnetization
Thin films
Geometry
magnetization
geometry
simulation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

Cite this

Variation of the magnetic energy barrier with the cell shape of nanostructured magnetic thin films. / Han, C. W.; Lim, Sang Ho.

In: Journal of Physics D: Applied Physics, Vol. 42, No. 4, 045006, 14.07.2009.

Research output: Contribution to journalArticle

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