Title :
Easy axis dispersion in high-moment Fe-Co-Ni thin films electrodeposited on various underlayers
Author :
Liu, Xiaomin ; Zangari, Giovanni
Author_Institution :
Dept. of Metall. & Mater. Eng., Alabama Univ., Tuscaloosa, AL, USA
fDate :
9/1/2002 12:00:00 AM
Abstract :
Soft high-moment Fe-Co-Ni films (50-1200-nm thick) were electrodeposited on nonmagnetic (100-nm Cu), ferromagnetic F (100-nm Fe20Ni80), antiferromagnetic AF (10-nm FeMn) and composite F/AF (AF on top) underlayers. The influence of the underlayers on magnetic properties - in particular, dispersion of the easy axis, coercivity, anisotropy field, and permeability was investigated. FeCoNi films on F and F/AF underlayers exhibit a well-defined uniaxial anisotropy with very small easy axis dispersion and low easy axis coercivity. Films grown on Cu or FeMn underlayers show a larger easy axis dispersion with relatively high coercivity. F/F or AF/F coupling contribute to the smaller easy axis dispersion of films grown on F or F/AF underlayers, respectively. The narrower easy axis dispersion also improves the high frequency permeability.
Keywords :
cobalt alloys; coercive force; electrodeposits; ferromagnetic materials; iron alloys; magnetic anisotropy; magnetic moments; magnetic permeability; magnetic thin films; nickel alloys; soft magnetic materials; Cu; Fe-Co-Ni; Fe20Ni80; Fe20Ni80-FeMn; FeMn; antiferromagnetic underlayer; coercivity; composite ferromagnetic/antiferromagnetic underlayer; easy axis dispersion; electrodeposition; ferromagnetic underlayer; high-frequency permeability; magnetic properties; nonmagnetic underlayer; soft high-moment Fe-Co-Ni thin film; uniaxial anisotropy; Anisotropic magnetoresistance; Coercive force; Dispersion; Iron; Magnetic anisotropy; Magnetic domains; Magnetic films; Magnetic properties; Perpendicular magnetic anisotropy; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.801973
