Magnetic anisotropy engineering: Single-crystalline Fe films on ion eroded ripple surfaces

We present a method to preselect the direction of an induced in-plane uniaxial magnetic anisotropy (UMA) in thin single-crystalline Fe films on MgO(001). Ion beam irradiation is used to modulate the MgO(001) surface with periodic ripples on the nanoscale. The ripple direction determines the orientat...

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Bibliographic Details
Published in:	Applied physics letters Vol. 100; no. 24
Main Authors:	Liedke, M. O., Körner, M., Lenz, K., Grossmann, F., Facsko, S., Fassbender, J.
Format:	Journal Article
Language:	English
Published:	United States 11-06-2012
Subjects:	ANISOTROPY CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY FERROMAGNETIC MATERIALS ION BEAMS IONS IRON IRRADIATION MAGNESIUM OXIDES MATERIALS SCIENCE MONOCRYSTALS NANOSTRUCTURES SURFACES THIN FILMS
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Summary:	We present a method to preselect the direction of an induced in-plane uniaxial magnetic anisotropy (UMA) in thin single-crystalline Fe films on MgO(001). Ion beam irradiation is used to modulate the MgO(001) surface with periodic ripples on the nanoscale. The ripple direction determines the orientation of the UMA, whereas the intrinsic cubic anisotropy of the Fe film is not affected. Thus, it is possible to superimpose an in-plane UMA with a precision of a few degrees—a level of control not reported so far that can be relevant for example in spintronics.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.4729151