磁気回路の反磁界係数

概要

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It is well known that the surface divergence of the magnetization vector gives rise to a magnetic field, usually termed the demagnetizing field. The demagnetizing field is closely related to the demagnetizing factor. If the properties of the magnetic materials and its demagnetizing factors are known, the analytical design for the magnetic elements becomes very justifiable and easy. In this paper, the following contents are described. (1) The concept of the demagnetizing factors in nonellipsoidal bodies (rods, circular cores with air-gap and cut-cores) is described systematically. The demagnetizing factors, therefore, in the magnetic circuits with air-gap are classified into the central (or ballistic), the average (or magnetometric) and the partial demagnetizing factors. (2) The history of the investigation on the demagnetizing fields is surveyed and adjusted using numerous references in Japan and abroad. (3) Finally, problem approaches to the demagnetizing factors are pointed out simply.
信州大学工学部の論文
1973-07-25