Improved magnetic information storage using return-point memory
نویسندگان
چکیده
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/AN fluctuations in traditional analog storage. © 1997 American Institute of Physics. @S0021-8979~97!02503-6#
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