Magnetocrystalline Anisotropy and Magnetic Permeability of Mn-Zn-Fe Ferrites

概要

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Magnetocrystalline anisotropy was measured for Mn-Zn-Fe ternary ferrites from liquid oxygen temperature to the Curie point by means of torque magnetometer, using a number of monocrystals. Anisotropy constant K_1 increases monotonically from that of the pure Mn ferrite with the increase of the content of ZnO. On the other hand, the introduction of a small amount of ferrous ions into Mn.Zn ferrites has a remarkable effect of increasing K_1 in positive sense. It was found that there is a region of exhibiting a positive K_1 at room temperature in the Mn-Zn-Fe ternary diagram. A feature of the temperature dependence of permeability μ can be interpreted in terms of a thermal change of K_1 The origin of the second maximum in μ versus T curve which is often observed near room temperature for manv Mn-Zn ferrites is considered to be corresponding to the point of K_1=0. The compositional dependence of the permeability is interpreted from those of the magnetocrystalline constant and the Curie point.site.
社団法人日本物理学会の論文
1963-05-05