Ε Iron oxide powder in which a part of iron sites is replaced with a metal element other than iron, its manufacturing method, and paste

摘要

PROBLEM TO BE SOLVED: To provide ε iron oxide powder of a small particle diameter (secondary particle diameter) and of a sharp particle diameter (secondary particle diameter) distribution with a part of iron sites substituted with a metal element other than iron, and a method of producing the same.SOLUTION: There are provided ε iron oxide particulate powder with a part of iron sites substituted with a metal element other than iron, constituted of granules of ε iron oxide particles with a part of iron sites substituted with a metal element other than iron, with the volume-based particle size of the ε iron oxide particulate powder measured by micro track particle size distribution measurement satisfying the following: D≤75 μm and (D-D)/D≤2.0; and a method of producing the same.SELECTED DRAWING: Figure 1