Nanoscale perpendicular magnetic island arrays fabricated by extreme ultraviolet interference lithography
2008
Magnetic island arrays with a period of 50nm and uniform over 20×20μm2 have been fabricated by depositing Co∕Pd multilayer films on prepatterned SiOx pillars produced by extreme ultraviolet interference lithography. Scanning electron microscopy and magnetic force microscopy measurements made on the same islands give a direct, island-by-island comparison of the size and remanent switching field. The results demonstrate that the switching field distribution (SFD) is not primarily due to magnetostatic interactions, and a strong dependence of SFD on size is also not observed, indicating that a distribution of material properties is likely to be responsible for the SFD.
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