The invention Z- type ferrite, the soft-magnetic hexagonal ferrite particles 100 parts by weight containing a Y- type ferrite or W- type ferrite as a main phase; Barium carbonate particles, strontium carbonate particles or a mixture of 0.3 to 10 parts by weight; And to a soft-magnetic hexagonal ferrite composite particles containing silicon dioxide particles from 0.1 to 5 parts by weight. ; Soft-magnetic hexagonal ferrite composite particles, the soft-magnetic hexagonal ferrite sintered ceramics
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