ESD磁石に関する研究

概要

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Recently there has been a marked development in the field of the study of permanent magnet material. This development is linked closely with domain theory of magnetization. Particularly, the development in fine particle magnets with anisotropy arising from particle shape is of greatest interest. This anisotropy was revealed theoretically by Stoner and Wohlfarth, and was analysed and compared by the researchers of General Electric Company in the United States in an excellent way. Elongated Single Domain magnets using mercury cathode electro-deposition method and their magnetic behaviours were studied successfully also by them. This method to obtain these powders and magnets, however, has many problems to be solved technologically and economically. In this report, We give an outline of the progress of ESD magnet and insert some experimental results on the production of ESD Iron and Iron-Cobalt powders and their magnets, and discuss the effect of condition of electrolysis, heat treatment, and additional elements to the magnetic properties of their powders and magnets.
明治大学の論文