Vis-a-vis the soft magnetic hexagonal ferrite grain powder 100 weight section which designates the green sheet and soft magnetic hexagonal ferrite sintering body null Z die ferrite,

摘要

PROBLEM TO BE SOLVED: To provide a soft magnetic hexagonal compound particle powder which is used to obtain by firing at a low temperature a soft magnetic hexagonal ferrite sintered body that has high sintered density and volume resistivity, has a sufficiently small imaginary part of the permeability in a several hundred MHz band and a large imaginary part of the permeability at a frequency of around several GHz, and can almost constantly hold the real part of the permeability without reducing it in a band ranging from low frequency band to several hundred MHz band.;SOLUTION: This soft magnetic hexagonal ferrite compound particle powder is made by mixing 100 weight part of a soft magnetic hexagonal ferrite particle powder made of Z type ferrite, Y type ferrite or W ferrite as main phase; with 0.3-7 weight part of a barium carbonate particle powder or a strontium carbonate particle powder, or the two carbonate particle powders; 0.1-5 weight part of a silicon dioxide particle powder, 1-20 weight part of a bismuth oxide particle powder; and 0.3-7 weight part of a copper oxide particle powder.;COPYRIGHT: (C)2003,JPO