Method of fabricating a magnetic head by sputter etching
 A floating type magnetic head is made of a polycrystalline material. A surface to be opposed to a magnetic recording medium is undulated with lands and grooves having a height difference of 50 to 200 .ANG. on an average and a repetition pitch of 5 to 20 microns on an average. The portions, in which the heights of the lands and the grooves abruptly change, extend along the boundaries of the polycrystals. The head surface opposed to the magnetic recording medium is sputter-etched to have the predetermined surface roughness. 
Hitachi Metals, Ltd.
Y G G G
Y10T G11B G11B G11B
additional inventional inventional inventional
Shinji Shunichi Masahiro Hirohide Yoshiaki Shigetoshi Akira
Furuichi Taka Ao Yamada Takada Morita Taguchi