Title :
Effect of crystalline microstructure in patterned Co and Permalloy/Co film elements
Author :
Fang, Tzu-Ning ; Zhu, Jian-Gang
Author_Institution :
Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
9/1/2000 12:00:00 AM
Abstract :
The importance of the polycrystalline microstructure of Co layer on the switching mechanism of Permalloy/Co composite film was investigated by the micromagnetic simulation. The grain texture effect of Co element significantly influences the switching processes as the diameter of grain size is larger than the magnetization coherent length. The random anisotropy crystallite of Co grain causes the irregularity of the magnetic reversal and rotation and induces the Barkhausen noise during reversal
Keywords :
Barkhausen effect; Permalloy; cobalt; composite materials; crystallites; ferromagnetic materials; grain size; interface magnetism; magnetic switching; magnetic thin films; magnetisation reversal; texture; Barkhausen noise; Co layer; FeNi-Co; Permalloy/Co film elements; composite film; crystalline microstructure; grain size; grain texture effect; magnetic reversal; magnetization coherent length; micromagnetic simulation; patterned Co; polycrystalline microstructure; random anisotropy crystallite; rotation; switching mechanism; Anisotropic magnetoresistance; Crystal microstructure; Crystallization; Grain size; Magnetic anisotropy; Magnetic films; Magnetic switching; Magnetization; Micromagnetics; Perpendicular magnetic anisotropy;
Journal_Title :
Magnetics, IEEE Transactions on
