Title :
Preparation of high-Bs Co-Fe soft magnetic thin films by electrodeposition
Author :
Yokoshima, Tokihiko ; Imai, Kenta ; Hiraiwa, Toshiki ; Osaka, Tetsuya
Author_Institution :
Adv. Res. Inst. for Sci. & Eng., Waseda Univ., Tokyo, Japan
fDate :
7/1/2004 12:00:00 AM
Abstract :
Co-Fe soft magnetic thin films with high-saturation magnetic flux density Bs were prepared by electrodeposition. The Bs value of the Co-Fe alloy films deposited from the conventional cell system is lower than that of bulk alloys. With the use of a separated compartment dual cell system, the Bs value of the Co-Fe alloy films was reached the same as that of bulk alloy. The coercivity Hc values were higher than 12 Oe; however, the Hc value could be lowered to 8 Oe by annealing in vacuum with an applied magnetic field. It is suggested that decreasing Hc of the films by annealing is caused by relaxation of lattice distortion. In addition, the high-Bs Co-Fe films show good corrosion resistance.
Keywords :
cobalt alloys; electrodeposition; magnetic annealing; magnetic cores; magnetic fields; magnetic flux; magnetic thin films; materials preparation; soft magnetic materials; CoFe; alloy films; bulk alloys; coercivity values; corrosion resistance; dual cell system; electrodeposition; head core material; high-saturation magnetic flux density; lattice distortion relaxation; magnetic field; soft magnetic material; soft magnetic thin films; Annealing; Electrodes; Iron alloys; Magnetic cores; Magnetic films; Magnetic flux density; Magnetic materials; Magnetic recording; Materials science and technology; Soft magnetic materials; Co–Fe alloy; head core material; high-saturation magnetic flux density; soft magnetic material;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.832120
