2.5-inch disk patterned media prepared by an artificially assisted self-assembling method
Top Cited Papers
- 10 December 2002
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Magnetics
- Vol. 38 (5) , 1949-1951
- https://doi.org/10.1109/tmag.2002.802847
Abstract
Circumferential magnetic patterned media were prepared on a 2.5-inch-diameter glass plate and on a 3-in-diameter silicon plate. A Ni master disk possessing spiral patterns with 60-250-nm-width lands and a 400-nm-width groove was pressed into a resist film on a CoPt or CoCrPt film to transfer the spiral patterns. A diblock copolymer solution was cast into the obtained grooves and then annealed to prepare self-assembling dot structures aligned along the grooves. According to the dot patterns, the underlying magnetic films were patterned by ion milling to yield patterned media with a 40-nm diameter. Coercive forces and squareness ratios of the patterned media increased compared to those of the continuous media, probably due to the decrement of a demagnetizing field. Single magnetic domains with an almost perpendicular orientation were confirmed in each magnetic dot.Keywords
This publication has 12 references indexed in Scilit:
- Self-Organized Cohesion of Organic Molecular Dots on Chemically Patterned SurfaceJapanese Journal of Applied Physics, 2001
- Graphoepitaxy of Spherical Domain Block Copolymer FilmsAdvanced Materials, 2001
- Patterning of granular magnetic media with a focused ion beam to produce single-domain islands at <140 Gbit/in/sup 2/IEEE Transactions on Magnetics, 2001
- The physical boundaries to high-density magnetic recordingJournal of Magnetism and Magnetic Materials, 2000
- Fabrication of patterned media for high density magnetic storageJournal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, 1999
- Perpendicular quantized magnetic disks with 45 Gbits on a 4×4 cm2 areaJournal of Applied Physics, 1999
- Planar Patterned Magnetic Media Obtained by Ion IrradiationScience, 1998
- Observed Substrate Topography-Mediated Lateral Patterning of Diblock Copolymer FilmsPhysical Review Letters, 1997
- Patterned media: a viable route to 50 Gbit/in/sup 2/ and up for magnetic recording?IEEE Transactions on Magnetics, 1997
- Microscopic magnetic characterization of submicron cobalt islands prepared using self-assembled polymer masking techniqueIEEE Transactions on Magnetics, 1997