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(Color online) MFM images of coupled multilayers, with different thicknesses of the NiO interlayer corresponding to the IEC values listed. In the images, light colored areas indicate a magnetization out of the page. Each image is in size.
(Color online) Representative line scans for the samples with NiO thicknesses of 7.5, 9, and . The left panels show the region where the lines scans were performed, the black box indicates the region used for averaging and the red lines indicate the average domain overlap width. Each image is in size. The right panel shows the corresponding lines scans, averaged over the region enclosed in the black box. The y-axis indicates the MFM tip response. The red arrows indicate the location of the red lines in the left panel and represent the FWHM of the features.
(Color online) Magnetostatic energy density for antiparallel-aligned domains with no overlap (a) and with overlap (b) for , , and .
Domain overlap width as a function of the coupling strength. Closed circles give the compiled line scan data for all samples. error bars account for MFM resolution. The solid line indicates the best fit to Eq. (2). The fit parameters are discussed in the text. The arrow corresponds to the coupling strength for the sample.
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