MFM of patterned magnetic multi-layer films

 

MFM images of a patterned magnetic multi-layer. The left-hand image shows narrow magnetic lines produced by e-beam lithography and imaged with high-resolution MFM mode: Most lines are a single magnetic domain, but some contain a domain wall with the respective flip of magnetization. Image size is 4 micron x 1 micron. In the right-hand image, square dots of a patterned magnetic multi-layer system measured with high-resolution MFM mode: Most dots are magnetic monodomains, but some show an internal domainstructure. Both polarities (bright and dark) of mono-domain dots are present. Image size is 8 micron x 8 micron.

Samples courtesy of B. Belle; EISS group at University of Manchester, UK