Title :
Micromagnetics of Hard Axis Loops for Composite Media
Author :
Valcu, Bogdan F.
Author_Institution :
Seagate Technol., Fremont, CA, USA
Abstract :
Hard axis loops are measured for composite magnetic films, consisting of a hard magnetic layer ferromagnetically exchange coupled to a soft magnetic layer. A quasi-analytic spin chain model is able to fully explain the experimental findings. The agreement between theory and experiment demonstrates the presence of a nonhomogeneous magnetization state in the composite films.
Keywords :
chromium alloys; cobalt alloys; composite materials; ferromagnetic materials; magnetic thin films; magnetisation; metallic thin films; micromagnetics; permanent magnets; platinum alloys; CoCrPt; composite magnetic film; ferromagnetic exchange; hard axis loop; hard magnetic layer; micromagnetics; nonhomogeneous magnetization state; quasianalytic spin chain model; Anisotropy; composite media; exchange; hard axis loop; micromagnetics;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2009.2023860
