Nanomagnetically shielded substrate
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United States of America Patent
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Mar 8, 2005
Grant Date -
Dec 23, 2004
app pub date -
Dec 18, 2002
filing date -
Dec 18, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A shielded substrate assembly that contains a magnetic shield with a layer of magnetic shielding material; the magnetic shield has a magnetic shielding factor of at least about 0.5. The magnetic shield contains nanomagnetic material nanomagnetic material with a mass density of at least about 0.01 grams per cubic centimeter, a saturation magnetization of from about 1 to about 36,000 Gauss, a coercive force of from about 0.01 to about 5,000 Oersteds, a relative magnetic permeability of from about 1 to about 500,000, and an average particle size of less than about 100 nanometers. The nanomagnetic material contains magnetic material with a coherence length of from about 0.1 to about 100 nanometers.
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