Pulwey, Ralph and Zölfl, M and Bayreuther, Günther and Weiss, Dieter (2002) Magnetic domains in epitaxial nanomagnets with uniaxial of fourfold crystal anisotropy. Journal of Applied Physics 91, p. 7995.
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In order to prepare submicron sized particles with strong magnetocrystalline anisotropies high quality epitaxial bcc-Fe films were grown on GaAs(110) and GaAs(001) by molecular beam epitaxy. Whereas Fe(110) on GaAs(110) is a model system with uniaxial in-plane anisotropy, Fe(001) on GaAs(001) has a strong fourfold anisotropy for films thicker than 5 nm. Various shapes like circular, square, or rectangular elements with sizes from 200 nm up to 6 µm were fabricated by electron beam lithography and ion beam etching. The remanent states after saturation along different directions or ac demagnetization along the easy axis were examined by using magnetic force microscopy. The experimental results clearly reflect the interplay of the different magnetocrystalline and shape anisotropies depending on the different magnetic histories.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||25 May 2009 15:20|
|Last Modified:||05 Aug 2009 15:57|
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