Details

Autor(en) / Beteiligte

• Bland, J A C
• Lew, W S
• Li, S P
• Lopez-Diaz, L
• Vaz, C A F
• Natali, M
• Chen, Y

Titel

Spin confinement by anisotropy modulation

Ist Teil von

• Journal of physics. D, Applied physics, 2002-10, Vol.35 (19), p.2384-2390, Article 2384

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2002

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The spin configuration in a magnet is in general a 'natural' consequence of both the intrinsic properties of the material and the sample dimensions. We demonstrate that this limitation can be overcome in a homogeneous ferromagnetic film by engineering an anisotropy contrast. Substrates with laterally modulated single-crystal and polycrystalline surface regions were used to induce selective epitaxial growth of a ferromagnetic Ni film. The resulting spatially varying magnetic anisotropy leads to regular perpendicular and in-plane magnetic domains, separated by a new type of magnetic domain wall-the 'anisotropy constrained' magnetic wall. Micromagnetic simulations indicate that the wall is asymmetric, has a small out-of-plane component and has no mobility under external perturbation. (Example material: epitaxial Cu/Ni /Cu(001).)