Formation of Magnetic Anisotropy by Lithography

Title
Formation of Magnetic Anisotropy by Lithography
Authors
최준우김시년남윤재김양두이헌임상호
Keywords
Magnetic Anisotropy; Lithography
Issue Date
2016-05
Publisher
Scientific Reports
Citation
VOL 6, 26709-1-26709-6
Abstract
Artificial interface anisotropy is demonstrated in alternating Co/Pt and Co/Pd stripe patterns, providing a means of forming magnetic anisotropy using lithography. In-plane hysteresis loops measured along two principal directions are explained in depth by two competing shape and interface anisotropies, thus confirming the formation of interface anisotropy at the Co/Pt and Co/Pd interfaces of the stripe patterns. The measured interface anisotropy energies, which are in the range of 0.2– 0.3 erg/cm2 for both stripes, are smaller than those observed in conventional multilayers, indicating a decrease in smoothness of the interfaces when formed by lithography. The demonstration of interface anisotropy in the Co/Pt and Co/Pd stripe patterns is of significant practical importance, because this setup makes it possible to form anisotropy using lithography and to modulate its strength by controlling the pattern width. Furthermore, this makes it possible to form more complex interface anisotropy by fabricating two-dimensional patterns. These artificial anisotropies are expected to open up new device applications such as multilevel bits using in-plane magnetoresistive thin-film structures.
URI
http://pubs.kist.re.kr/handle/201004/59422
ISSN
20452322
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KIST Publication > Article
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