FERRITE POWDER, METHOD FOR PREPARING THE SAME, AND COMMON MODE NOISE FILTER INCLUDING THE SAME AS MATERIAL FOR MAGNETIC LAYER
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United States of America Patent
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Issued Date -
Feb 6, 2014
app pub date -
Mar 14, 2013
filing date -
Aug 2, 2012
priority date (Note) -
Abandoned
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Abstract
Disclosed herein are a ferrite powder not including pores in a surface thereof, a method for preparing the same, and a common mode noise filter including the same as a material for a magnetic layer. The spherical ferrite powder in which the pores in the surface thereof are removed as a magnetic layer of the common mode noise filter has high density, such that dispersibility is improved, thereby making it possible to improve adhesive strength with a polymer binder to be mixed. In addition, the adhesive strength between the polymer binder and the ferrite powder is improved, such that at the time of manufacturing or mounting of a chip, a defect such as a crack generated by a thermal impact due to a lack of adhesive strength between the ferrite powder and the polymer binder may be suppressed, thereby securing the reliability with respect to the thermal impact.
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