Abstract
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 (σs) 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.
