Patent ID: 6815609
Filing Date: 2004-11-09
Classification: A61N,B82Y,H01B,H01F,Y10T

Abstract:
A magnetically shielded substrate assembly comprised of a substrate and, disposed over such substrate, a magnetic shield, wherein:(a) said magnetic shield, when exposed to a magnetic field with an intensity of at least 0.5 Teslas, has a magnetic shielding factor of at least about 0.5; (b) said magnetic shield is comprised of a film of nanomagnetic material comprising at least about 40 weight percent of nanomagnetic material with a mass density of at least about 0.01 grams per cubic centimeter, a saturization 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; and (c) said film of nanomagnetic material has a squareness of from about 0.5 to about 1.0.