Title :
Gyromagnetic switching limitations in thin film media
Author :
Fang, Hao ; Zhu, Jian-Gang
Author_Institution :
Seagate Technol., Bloomington, MN, USA
fDate :
9/1/1999 12:00:00 AM
Abstract :
Micromagnetic modeling is utilized to study the gyromagnetic switching limitations in thin film media. The dependence of switching time on film microstructures under uniform applied field is quantitatively investigated. For media with the same Mrt, reducing the film thickness and increasing intergranular exchange coupling reduces the switching time at damping constants α less than 0.1. The effect is more significant for smaller α values. Oriented media have a longer switching time than isotropic media
Keywords :
exchange interactions (electron); gyromagnetic effect; magnetic recording; magnetic thin film devices; magnetisation; damping constants; film microstructures; film thickness; gyromagnetic switching limitations; intergranular exchange coupling; switching time; thin film media; uniform applied field; Damping; Gyromagnetism; Magnetic films; Magnetic recording; Magnetic resonance; Magnetic switching; Magnetization; Micromagnetics; Microstructure; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
