superparamagnetic limit

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The maximum number of bits per square inch that is commercially feasible on a magnetic storage device. As the magnetic bits get smaller, at some point they no longer hold their charge. Thermal fluctuations reduce the signal strength and render the bits unstable.

However, this ultimate areal density keeps changing as researchers find new techniques for recording and sensing the bit. Years ago the limit was thought to be 20 gigabits per square inch. Today, the limit is several hundred gigabits per square inch, and more than a terabit is expected in the years to come. See areal density, magnetoresistance and AFC.

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No references found			Today, the hard drive industry's ability to push out the superparamagnetic limit is more critical than ever as capacity requirements continue to grow dramatically. Perpendicular recording: opening the doors for 10-fold hard drive ... by Best, John / Computer Technology Review But even perpendicular recording will stave off the superparamagnetic limit only for a few years. Memory enhancers: researchers explore future possibilities for dense ... by Gorman, Jessica / Science News In addition, the damping mechanisms that couple the magnetism to the thermal bath also drive the magnetic fluctuations that characterize the superparamagnetic limit of storage density. Broadband ferromagnetic resonance spectrometer. (News Briefs) by Journal of Research of the National Institute of Standards and Technology			supermature supermicro supermini supermode laser supermolecule supermultiplet supernatant supernatant liquid supernatant liquor supernatural supernetting supernode SuperNOS Supernova supernova remnant supernumerary supernumerary bud supernumerary chromosome supernumerary rainbow Superobjective Superorder superoxide dismutase superoxide ion Superoxol SuperPaint superparamagnetic limit superparamagnetic particle Superparamagnetism Superphosphate superpipelined Superplastic forming superplasticity superplasticizer superposability superposed superposed circuit superposed stream superposition superposition eye superposition integral Superposition Principle superposition theorem superpower superprint Superprofits superprogrammer superradiant scattering superreflexive Banach space superrefraction superregeneration superresolution			superovulation superoxide superoxide superoxide superoxide anion Superoxide Anion Radical Superoxide chemistry Superoxide chemistry superoxide dismutase superoxide dismutase superoxide dismutase superoxide dismutase superoxide dismutase 1 superoxide ion Superoxidedismutase Superoxidedismutase Superoxidedismutase Superoxides Superoxides superoxidized water superoxidized water superoxidized water superoxidized water superoxidized water superoxol superoxol SuperPaint Superparamagnetic Superparamagnetic Superparamagnetic effect superparamagnetic limit superparamagnetic particle Superparamagnetism superparasitic superparasitism Superparticular Superparticular number Superpartient superpatriotic superpatriotism Superpave Superpave Mix Design Technologist Superphat superphosphate superphosphate superphosphate Superphosphate of lime superphylum superphylum superphylum superphylum superphysical Superpipelined Superplanet Superplanets Superplant superplastic superplastic Superplastic forming Superplastic forming Superplastic Thermo-Mechanical Treatment

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