DocumentCode :
1478033
Title :
Patterned magnetic nanostructures and quantized magnetic disks
Author :
Chou, Stephen Y.
Author_Institution :
NanoStructure Lab., Minnesota Univ., Minneapolis, MN, USA
Volume :
85
Issue :
4
fYear :
1997
fDate :
4/1/1997 12:00:00 AM
Firstpage :
652
Lastpage :
671
Abstract :
Nanofabrication, offering unprecedented capabilities in the manipulation of material structures and properties, opens up new opportunities for engineering innovative magnetic materials and devices, developing ultra-high-density magnetic storage, and understanding micromagnetics. This paper reviews the recent advances in patterned magnetic nanostructures, a fast-emerging field, including (1) state-of-the-art technology for patterning of magnetic nanostructures as small as 10 nm; (2) engineering of unique magnetic properties (such as domain structures, domain switching, and magnetoresistance) by patterning and controlling the size, shape, spacing, orientation, and compositions of magnetic materials; (3) quantized magnetic disks-a new paradigm for ultra-high-density magnetic storage based on patterned single-domain elements that have demonstrated a storage density of 65 Gb/in2 (nearly two orders of magnitude higher than that in current commercial magnetic disks) and a capability of 400 Gb/in2 ; (4) novel magnetoresistance sensors based on unique properties of magnetic nanostructures; (5) other applications of nanoscale patterning in magnetics such as the quantification of magnetic force microscopy (MFM) and a new ultra-high-resolution MFM tip; and (6) sub-10-nm imprint lithography-a new low-cost, high-throughput technology for manufacturing magnetic nanostructures
Keywords :
lithography; magnetic disc storage; magnetic domains; magnetic force microscopy; magnetic sensors; magnetic switching; magnetoresistive devices; nanotechnology; 10 nm; domain structure; domain switching; imprint lithography; magnetic force microscopy; magnetoresistance sensor; micromagnetics; nanofabrication; patterned magnetic nanostructure; quantized magnetic disk; single-domain element; ultra-high-density magnetic storage; Magnetic domains; Magnetic force microscopy; Magnetic materials; Magnetic memory; Magnetic properties; Magnetoresistance; Material storage; Nanofabrication; Nanostructures; Shape control;
fLanguage :
English
Journal_Title :
Proceedings of the IEEE
Publisher :
ieee
ISSN :
0018-9219
Type :
jour
DOI :
10.1109/5.573754
Filename :
573754
Link To Document :
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