Title :
High-frequency permeability and thermal stability of electrodeposited high-Bs CoNiFe thin films
Author :
Mizutani, Satoshi ; Yokoshima, Tokihiko ; Nam, Hyo-Seung ; Nakanishi, Takuya ; Osaka, Tetsuya ; Yamazaki, Yohtaro
Author_Institution :
Dept. of Appl. Chem., Waseda Univ., Tokyo, Japan
fDate :
9/1/2000 12:00:00 AM
Abstract :
The thermal stability and high-frequency permeability of high-B s CoNiFe thin films were investigated. CoNiFe films exhibited excellent soft magnetic properties and good thermal stability up to 350°C. Annealing in longitudinal magnetic field enabled one to achieve Hk as high as 35 Oe, while the Hk value after annealing in a transverse magnetic field was less than 20 Oe. By suppressing the core loss, the effective permeability of high-Bs CoNiFe thin film at high frequencies was improved successfully
Keywords :
cobalt alloys; ferromagnetic materials; iron alloys; magnetic annealing; magnetic heads; magnetic leakage; magnetic permeability; magnetic recording; magnetic thin film devices; nickel alloys; soft magnetic materials; thermal stability; 0 to 350 degC; CoNiFe; core loss; effective permeability; high-frequency permeability; longitudinal magnetic field; magnetic thin films; soft magnetic properties; thermal stability; transverse magnetic field; Annealing; Core loss; Frequency; Magnetic films; Magnetic materials; Magnetic recording; Permeability; Soft magnetic materials; Thermal stability; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
