PRODUCTION METHOD FOR SEMIRIGID MAGNETIC MATERIAL AND SEMIRIGID MATERIAL AND MAGNETIC MARKER USING IT

摘要

A method of producing a semirigid magnetic material having a high rectangularity ratio and an excellent magnetizing steepness, and suitably a magnetic marker bias material, the method comprising the steps of heating a multilayer clad material formed by diffusion-joining a layer A mainly consisting of Fe with a layer B mainly consisting of a Cu group nonmagnetic metal, shredding the layer B, and then cold-plastic-forming the material, thereby making it possible to produce a semirigid magnetic material having a high rectangularity ratio and an excellent magnetizing steepness and a magnetic marker bias material.