FERRITE COMPOSITION FOR HIGH FREQUENCY BEAD AND A CHIP BEAD USING THEREOF CAPABLE OF USING IN HUNDREDS MHz BANDS

摘要

PURPOSE: A ferrite composition for high frequency bead and a chip bead using thereof are provided to sinter at low temperature less than 920 deg. Celsius without including additive for low-temperature sintering.;CONSTITUTION: A manufacturing method of ferrite composition for high frequency bead substitutes a part of Fe with one or more of metals which is selected from bivalent, trivalent, and tetravalent metals in M-type hexagonal ferrite marked as BaFe12019. The ferrite composition includes 12 mole% of Based on Fe, bivalent, trivalent, and tetravalent metals based on 1 mole% of Ba. 8.0-10.5 mole% of Fe, 0.05-4 mole% of bivalent metal, 0.05-2.0 mole% of trivalent metal, and 0.05-4.0 mole% of tetravalent metal based on 1 mole% of Ba. The bivalent metal is more than 1 kind which is selected from Zn, Cu, Ni, Co, Mg, and Mn. The trivalent metal is more than 1 kind which is selected from V, Ga, Al, In, and Sc. The tetravalent metal is more than one selected from Ti, Sn, Zr, Hf, Ce, and Ru. The ferrite composition is sintered at 920 deg. Celsius or less.;COPYRIGHT KIPO 2012