245 research outputs found
Improved Magnetic Information Storage using Return-Point Memory
The traditional magnetic storage mechanisms (both analog and digital) apply
an external field signal H(t) to a hysteretic magnetic material, and read the
remanent magnetization M(t), which is (roughly) proportional to H(t). We
propose a new analog method of recovering the signal from the magnetic
material, making use of the shape of the hysteresis loop M(H). The field H,
``stored'' in a region with N domains or particles, can be recovered with
fluctuations of order 1/N using the new method - much superior to the 1/sqrt{N}
fluctuations in traditional analog storage.Comment: 9 pages, 15 figure
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