Title :
Energy barrier and magnetic properties of exchange-coupled hard-soft bilayer
Author :
Shan, Z.S. ; Liu, J.P. ; Chakka, Vamsi M. ; Zeng, H. ; Jiang, J.S.
Author_Institution :
Komag Inc., San Jose, CA, USA
fDate :
9/1/2002 12:00:00 AM
Abstract :
In this paper, the magnetic properties of an exchange-coupled hard-soft bilayer system have been analyzed based on its energy-barrier characteristics. Analytical solutions of the magnetic and structural parameters such as the energy barriers, the coercivities, the critical coupling-constant, the critical coupling dimension of soft phase, and the energy product have been derived. These analytical solutions reveal the correlation between the magnetic properties and the physical dimensions of its soft and hard phase constituents.
Keywords :
coercive force; exchange interactions (electron); magnetic multilayers; nanostructured materials; permanent magnets; soft magnetic materials; Stoner-Wohlfarth model; coercivities; critical coupling dimension; critical coupling-constant; energy product; energy-barrier characteristics; exchange-coupled hard-soft bilayer; magnetic properties; optimal design; physical dimensions; spring magnet; structural parameters; Coercive force; Couplings; Energy barrier; Magnetic analysis; Magnetic anisotropy; Magnetic properties; Magnetization; Perpendicular magnetic anisotropy; Soft magnetic materials; Springs;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.803226
