Title :
The role of vortices in the magnetization process of small dimension permalloy films
Author :
Jia, Lixin ; White, Robert M. ; Kryder, Mark H.
Author_Institution :
Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
9/1/1996 12:00:00 AM
Abstract :
A micromagnetic model has been developed for small dimensional permalloy films, such as those being considered for high density recording. The results show that variations in the magnetization occur through the formation of vortices which give rise to Barkhausen noise in the transfer curve
Keywords :
Barkhausen effect; Permalloy; ferromagnetic materials; magnetic domain walls; magnetic recording noise; magnetic thin films; magnetisation; Barkhausen noise; Neel wall; cross-tie walls; high density recording; magnetization process; magnetization variations; micromagnetic model; small dimension permalloy films; transfer curve; vortices; Anisotropic magnetoresistance; Boundary conditions; Data storage systems; Demagnetization; Distribution functions; H infinity control; Hysteresis; Magnetic heads; Magnetization; Micromagnetics;
Journal_Title :
Magnetics, IEEE Transactions on
