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Nanopatterning of magnetic domains: Fe coverage of self-assembled alumina nanostructure...

by Qibin Wu, Bo-yao Wang, Wen-chin Lin, Zheng Gai, Minn-tsong Lin
Publication Type
Journal
Journal Name
Applied Physics Express
Publication Date
Page Number
093002
Volume
8
Issue
9

Nanosized ultrathin magnetic films were prepared by controlling the deposition of Fe onto an oxidized NiAl(001) surface with an alumina nanostructure on it. Because the ultrathin ferromagnetic Fe films on the bare NiAl(001) surface are separated by paramagnetic Fe nanoparticles on the alumina stripes, as determined by scanning electron microscopy with spin analysis, they form rectangular domains with sizes ranging from tens of nanometer to larger than a micrometer. Magnetic domain patterning can thus be achieved by controlling the Fe coverage and nanostructured template. (C) 2015 The Japan Society of Applied Physics