COMPOSITE TYPE MAGNETIC BODY CERAMIC MATERIAL AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To obtain expected magnetic characteristics generating relatively little reaction product in grain boundary of a baked matter by forming an Ag 100% inner conductor, by sintering a composite type magnetic substance ceramic material at 960 deg.C or lower in atmosphere and making relative permeability not less than 800. SOLUTION: The composite magnetic substance ceramic material is formed by mixing and baking an Ni-Zn ferrite-base first magnetic substance ceramic material and an Ni-Zn-Cu ferrite-base second magnetic substance ceramic material. The calcinated body or sintered body powder is formed by calcinating or baking a first magnetic substance ceramic material at a temperature lower than its sintering temperature by 100 deg.C or the sintering temperature. The calcinted body powder is formed by calcinating a second magnetic substance ceramic material at 700 to 800 deg.C. Calcinated body powder of a second magnetic substance ceramic material is incorporated 40 to 80 vol.% as matrix material and calcinated body or sintered body powder of a first magnetic substance ceramic material is incorporated as aggregate for the balance.