Abstract
Using electron beam nanolithography and electroplating, arrays of Ni pillars on silicon that have a uniform diameter of 35 nm, a height of 120 nm, and a period of 100 nm were fabricated. The density of the pillar arrays is 65 Gbits/in.2 - over two orders of magnitude greater than the state-of-the-art magnetic storage density. Because of their nanoscale size, shape anisotropy, and separation from each other, each Ni pillar is single domain with only two quantized perpendicular magnetization states: up and down. Each pillar can be used to store one bit of information, therefore such nanomagnetic pillar array storage offers a rather different paradigm than the conventional storage method. A quantum magnetic disk scheme that is based on uniformly embedding single-domain magnetic structures in a nonmagnetic disk is proposed.
Original language | English (US) |
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Pages (from-to) | 6673-6675 |
Number of pages | 3 |
Journal | Journal of Applied Physics |
Volume | 76 |
Issue number | 10 |
DOIs | |
State | Published - 1994 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy