Iron oxide for MnZn-based ferrite raw material, MnZn-based ferrite and method for producing MnZn-based ferrite

摘要

PROBLEM TO BE SOLVED: To provide iron oxide for MnZn-based ferrite raw material exhibiting low core loss property uniformly even when conducting mixing of iron oxide or the like of a MnZn-based ferrite raw material in dry system.SOLUTION: Mn: over 0.30 mass% and 2.5 mass% or less and Cl: Clof 0.10 to 0.20 mass% are contained in iron oxide and further contamination amount of B is suppressed to 3.0 mass.ppm or less.SELECTED DRAWING: None