Title :
Thermal stability of ME recording media by measuring time and temperature effects
Author :
Pan, Tao ; Spratt, Geoffrey W.D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
9/1/1996 12:00:00 AM
Abstract :
Different metal evaporated (ME) media were compared to investigate the cause of the temperature dependence of coercivity for ME media. It was found that exchange coupling and the temperature dependence of coercivity near room temperature are separate issues. By measuring the time dependence of coercivity, the crystalline anisotropy of Co was found to be the main cause of ME media´s temperature dependence of coercivity. The switching volume for Hi8 ME medium was found to be extremely small, about 1100 nm3, which indicates highly desirable low recording noise. Furthermore, by evaluating the value of K uV/KBT, ME media were found to be thermally stable
Keywords :
coercive force; exchange interactions (electron); magnetic anisotropy; magnetic recording; thermal stability; ME recording media; coercivity; crystalline anisotropy; exchange coupling; metal evaporated media; noise; switching volume; temperature effects; thermal stability; time effects; Anisotropic magnetoresistance; Coercive force; Crystallization; Grain size; Magnetic field measurement; Magnetometers; Temperature dependence; Temperature measurement; Thermal stability; Time measurement;
Journal_Title :
Magnetics, IEEE Transactions on
