Title :
Soft magnetic properties and structure of high B/sub s/ Fe-Co-Al-O films
Author :
Shintaku, K. ; Yamakawa, K. ; Ouchi, K.
Author_Institution :
Akita Res. Inst. of Adv. Technol., Japan
Abstract :
Fe-Co based films have been investigated for writing head core materials with a high B/sub s/ in recent years. We have reported that the combination of a small amount of Al/sub 2/O/sub 3/ addition and a soft magnetic underlayer film is important to obtain small H/sub ch/ with high B/sub s/ of 2.4 T in a wide range of film thickness for Fe-Co films. The mechanism of soft magnetic properties by using the Al/sub 2/O/sub 3/ addition and/or the soft magnetic underlayer film is studied. We confirm that the soft magnetic properties of Fe-Co system films are related to the expansion of the lattice constant and random crystal orientation.
Keywords :
alloying additions; alumina; cobalt alloys; crystal orientation; iron alloys; lattice constants; magnetic recording; magnetic thin films; soft magnetic materials; (Fe/sub 70/Co/sub 30/)/sub 100/Al/sub 2/O/sub 3/; 2.4 T; Al/sub 2/O/sub 3/ addition; Fe-Co-Al-O films; film thickness; lattice constant expansion; random crystal orientation; soft magnetic properties; structure; writing head core materials; Grain size; Lattices; Magnetic films; Magnetic heads; Magnetic properties; Semiconductor films; Soft magnetic materials; Substrates; Writing; X-ray scattering;
Conference_Titel :
Joint NAPMRC 2003. Digest of Technical Papers [Perpendicular Magnetic Recording Conference]
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-7746-X
DOI :
10.1109/NAPMRC.2003.1177029
