| 摘要 |
<p>A method of producing a ferrite/Sendust composite core for magnetic head, in which a metal film made of any one of metals of Zn, Cr, Fe, Cd, Co, Ni, Sn and Pb is formed on a surface, where a track of the core is formed, of a gapped bar composed of ferrite and Sendust, before the gapped bar is subjected to a laser-induced etching in an alkali metal hydroxide aqueous solution. The metal film serves to prevent to form a dull at an edge portion of the track, so that the magnetic core being free from the dull and high in reliability can be obtained.</p> |
