| Issue |
Europhys. Lett.
Volume 64, Number 6, December 2003
|
|
|---|---|---|
| Page(s) | 810 - 815 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2003-00630-6 | |
| Published online | 01 November 2003 | |
Concentric domains in patterned thin films with perpendicular magnetic anisotropy
Max-Planck-Institut
für Mikrostrukturphysik - Weinberg 2, 06120 Halle, Germany
Received:
4
June
2003
Accepted:
13
October
2003
We report a finite-element micromagnetic study on domain
structures in tetragonally distorted 
films which
are confined to the geometric shapes of a cylindrical disc,
rectangular and triangular prisms, and a pacman. The
thickness-dependent perpendicular anisotropy is provided by the
inverse magnetostriction effect. It is found that some of the
observed perpendicular domain patterns reflect the in-plane shape
of their respective element. We call these domains “concentric
domains”. The geometric effect on the domain shape is attributed
to the inhomogeneity of the demagnetizing field.
PACS: 75.70.Kw – Domain structure (including magnetic bubbles) / 75.75.+a – Magnetic properties of nanostructures / 02.70.Dh – Finite-element and Galerkin methods
© EDP Sciences, 2003
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