Anomalous Magnetic Properties of a 2-dimensional Rhomboid Spin Anti-dot Lattice (vol 58, pg 998, 2011)
- Title
- Anomalous Magnetic Properties of a 2-dimensional Rhomboid Spin Anti-dot Lattice (vol 58, pg 998, 2011)
- Author
- 이영백
- Keywords
- Abnormal magnetic properties; Spin-photonic crystal; Magneto-transport; Magneto-resistance; Co/Ni anti-dot arrays
- Issue Date
- 2011-04
- Publisher
- Korean Physical Society
- Citation
- Journal of the Korean Physical Society, 2011, 58(6), P.1716-1716
- Abstract
- We fabricated a 2-dimensional spin lattice of circular anti-dots on a silicon substrate by using the photolithography and the wet-etching techniques. A rhomboid lattice symmetry of anti-dots with a diameter of about 1 ? was formed in a 40-nm-thick Co layer with a 5-nm-thick Ni underlayer. The magnetic anisotropy was investigated by using magneto-optical Kerr-effect magnetometry to identify the easy and the hard axes. A systematic study of the magnetic-reversal process was performed using magnetization and magneto-transport measurements with the field applied along the hard axis of the lattice. Anomalous features, a 3-step transition of the magnetization, a nonmonotonous temperature dependence of the coercive field, and a complex behavior of the magneto-resistance data, were observed in the magnetic-reversal process. We speculate that these anomalies originate from the vortex-related phenomena that are inherent in the submicrostructures.
- URI
- http://www.jkps.or.kr/journal/view.html?volume=58&number=6&spage=1716&year=2011http://hdl.handle.net/20.500.11754/52982
- ISSN
- 0374-4884
- DOI
- 10.3938/jkps.58.1716
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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