Methods of ion milling for magnetic heads and systems formed thereby

摘要

A method according to one embodiment includes ion milling at a first angle of greater than about 25 degrees from normal relative to a media facing side of a thin film region of a magnetic head or component thereof for recessing the thin film region at about a constant rate for films of interest of the thin film region, planes of deposition of the films being oriented about perpendicular to the media facing side; and ion milling or plasma sputtering at a second angle of less than about 25 degrees from normal relative to the media facing side of the thin film region for recessing magnetic films therein faster than insulating films therein, the second angle being smaller than the first angle.