X-ray photoemission electron microscopy investigation of magnetic thin film antidot arrays

Heyderman, L. J.; Nolting, F.; Quitmann, C.
September 2003
Applied Physics Letters;9/1/2003, Vol. 83 Issue 9, p1797
Academic Journal
Periodic square arrays of antidots in 10 nm-thick cobalt films have been investigated with antidot periods, p, ranging from 2 μm down to 200 nm and various ratios of antidot size to antidot separation, w/d. For p=2 μm, the extent of modification of the thin film magnetic domain structure increases with increasing w/d, forming domains pinned diagonally between antidots for w/d>=0.2 and resulting in a two-dimensional periodic checked domain contrast commensurate with the antidot lattice for w/d>=0.9. As p is decreased while maintaining d≈w, we observe a dramatic change in the magnetic domain configuration at p=400 nm resulting in chains of magnetic domains running parallel to the intrinsic hard axis and with lengths corresponding to a multiple of the antidot period. © 2003 American Institute of Physics.


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