| 摘要 |
PURPOSE:To avoid an adsorbing phenomenon between a medium and magnetic head slider and to perform recording and reproduction stably with a low floating amount, by etching a protection film formed on a thin film magnetic substance to a specific surface coarseness with gas ion irradiation. CONSTITUTION:After performing a specified per-processing for a base 1, a magnetic substance layer 2 with thin film thickness is formed with plating or vacuum deposition, and a protection film 3 such as silicon oxide SiO2 is formed on the magnetic substance layer 2. On the surface of the protection film 3, gas ions are irradiated with the inverse sputtering method, and the ion milling method for the etching to obtain 0.05-0.1mum of surface coarseness. |
