Title :
New soft magnetic CoNiFe plated films with high Bs=2.0-2.1 T
Author :
Osaka, Tetsuya ; Takai, Madoka ; Hayashi, Katsuyoshi ; Sogawa, Yoshimichi ; Ohashi, Keishi ; Yasue, Yoshihiko ; Saito, Mikiko ; Yamada, Kazuhiko
Author_Institution :
Dept. of Appl. Chem., Waseda Univ., Tokyo, Japan
fDate :
7/1/1998 12:00:00 AM
Abstract :
A CoNiFe film with saturation magnetic flux density (Bs) greater than 2.0 tesla (T) has been prepared for the first time as a soft magnetic film; the coercivity (Hc) of the film is less than 160 A/m (2.0 Oe). This success was achieved by formulating a new plating bath and operating conditions to form fine grains. The film has a low Hc of less than 160 A/m, a low saturation magnetostriction (λs) of approximately 10 -6, and a high Bs of 2.0-2.1 T. The present invention is expected to contribute to accelerating the development of not only the technology of high-density magnetic recording but also the field of magnetic materials in general
Keywords :
cobalt alloys; coercive force; electroplating; iron alloys; magnetic heads; magnetic recording; magnetic thin films; magnetostriction; nickel alloys; soft magnetic materials; CoNiFe; coercivity; fine grains; high-density magnetic recording; saturation magnetic flux density; saturation magnetostriction; soft magnetic CoNiFe plated films; Acceleration; Coercive force; Magnetic films; Magnetic flux; Magnetic flux density; Magnetic materials; Magnetic recording; Magnetostriction; Saturation magnetization; Soft magnetic materials;
Journal_Title :
Magnetics, IEEE Transactions on
