Stripe-to-bubble transition of magnetic domains at the spin reorientation of (Fe/Ni)/Cu/Ni/Cu(001)

Title
Stripe-to-bubble transition of magnetic domains at the spin reorientation of (Fe/Ni)/Cu/Ni/Cu(001)
Authors
Jie Wu최준우원창연Yizheng WuAndreas SchollAndrew Doran황찬용Zi Qiang Qiu
Keywords
Magnetic Domain; Spin Reorientation Transition; Magnetic Thin Film
Issue Date
2009-01
Publisher
Physical review B, Condensed matter and materials physics
Citation
VOL 79, NO 1, 014429-1-014429-6
Abstract
Magnetic domain evolution at the spin reorientation transition SRT of Fe/Ni /Cu/Ni/Cu 001 is investigated using photoemission electron microscopy. While the Fe/Ni layer exhibits the SRT, the interlayer coupling of the perpendicularly magnetized Ni layer to the Fe/Ni layer serves as a virtual perpendicular magnetic field exerted on the Fe/Ni layer. We find that the perpendicular virtual magnetic field breaks the up-down symmetry of the Fe/Ni stripe domains to induce a net magnetization in the normal direction of the film. Moreover, as the virtual magnetic field increases to exceed a critical field, the stripe domain phase evolves into a bubble domain phase. Although the critical field depends on the Fe film thickness, we show that the area fraction of the minority domain exhibits a universal value that determines the stripe-to-bubble phase transition.
URI
http://pubs.kist.re.kr/handle/201004/38715
ISSN
1098-0121
Appears in Collections:
KIST Publication > Article
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