METHOD FOR PRODUCING FERRITE
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United States of America Patent
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Issued Date -
May 17, 2012
app pub date -
Aug 11, 2009
filing date -
Aug 13, 2008
priority date (Note) -
Abandoned
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Abstract
Disclosed herein is a method for producing a ferrite which can achieve high efficiency even in a high frequency range. The method comprises the steps of: mixing barium nitrate (Ba(NO3)2), cobalt nitrate hexahydrate (Co(NO3)2.6H2O) and ferric nitrate nonahydrate (Fe(NO3)3.9H2O) at a ratio of 3:2:24 to form a liquid-phase mixture; co-precipitating the mixture with sodium hydroxide (NaOH) so as to be metalized; washing and drying the co-precipitated mixture; heat-treating the co-precipitated mixture; and adding aluminum oxide (Al2O3) to the mixture. The method can provide a high-efficiency ferrite having reduced permittivity, permeability, dielectric loss and permeability loss.
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