Er₂O₃添加MnZn単結晶フェライトの磁気特性

抄録

Soft magnetic ferrites now in use as magnetic devices have a disadvantage in that the saturation magnetization is considerably lower than that of metallic soft magnetic materials. The present authors found that the Mn-Zn ferrite single crystals containing about 0.05 mol% Er₂O₃ have improved saturation magnetization (σ_s) and relative permeability (μ'_s). It is considered that the effect of the Er₂O₃ addition on magnetic properties is closely related to the increase of saturation magnetic moment by the dissolving of Er into the Mn-Zn ferrite. Mn-Zn ferrite containing Er₂O₃ is expected to be useful as a magnetic head material.