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Detailed knowledge of magnetization reversal and possible magnetic configurations in magnetic nanostructures is essential for high-density magnetic memory. Magnetism of nanostructured magnets, of size comparable to or smaller than ferromagnetic domain size, offers a great potential for new physics. We present results of a systematic study of magnetic reversal in sub-100 nm nanodots, and how this reversal...
The formation of a parallel magnetic domain wall in the ferromagnetic (FM) Fe layer in Fe/FeF2 systems and antiferromagnetic (AF) FeF2 and MnF2 in Ni/FeF2 and Co/MnF2 bilayers as well as the magnetization reversal of uncompensated Fe interfacial moments in positively and negatively biased Ni/FeF2 was studied. Combining X-ray magnetic circular (XMCD) and linear dichroism (XMLD) measurements allows...
This papers present a novel phenomenon in FM/AF heterostructure systems (AF = FeF2, FM= (Ni,Co)), where the FM switching can be also controlled by thermal cycling. It was found that a FM saturated above the AF Neel temperature TN, spontaneously reverses its magnetization against a constant field with decreasing temperature. This reversal also exhibits a significant magnetization vs. temperature hysteresis,...
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