Title :
Dynamic coercivity effects in thin film media
Author :
Richter, H.J. ; Wu, S.Z. ; Malmhall, R.
Author_Institution :
Recording Media Group, Seagate Technol., Fremont, CA, USA
fDate :
7/1/1998 12:00:00 AM
Abstract :
A non-destructive technique to measure the time dependence of remanent coercivity in thin film disks is suggested. It is found that typical thin film recording media show an increase in coercivity of about 25% when the length of the field pulse is decreased from ~50 ms down to 10 ns. Very thin magnetic films are found to have considerably larger changes in coercivity than thicker ones
Keywords :
coercive force; magnetic recording; magnetic thin films; dynamic coercivity effects; thin film media; thin film recording media; thin magnetic films; time dependence; Coercive force; Disk recording; Magnetic field measurement; Magnetic films; Magnetic heads; Magnetic recording; Saturation magnetization; Transistors; Viscosity; Writing;
Journal_Title :
Magnetics, IEEE Transactions on
