Tailoring the magnetic anisotropy of cobalt-gold thin films

Authors : Cengiz OKAY, Perihan AKSU, Caner DEĞER, Fikret YILDIZ

Pages : 335-341

View : 21 | Download : 10

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :  Magnetic cobalt-gold thin films insert ignore into journalissuearticles values(Co x ` role=`presentation`> x x _{x} Au insert ignore into journalissuearticles values( 1 − x ); ); ` role=`presentation`> insert ignore into journalissuearticles values( 1 − x ); ); insert ignore into journalissuearticles values( 1 − x ); ); _{insert ignore into journalissuearticles values(1-x);}); are grown on silicon insert ignore into journalissuearticles values(100); surfaces by using a sputter deposition technique. Magnetic anisotropy of the films is investigated by ferromagnetic resonance insert ignore into journalissuearticles values(FMR);. Magnetic properties are explored by micromagnetic simulations based on the metropolis algorithm. Effective magnetic anisotropy is gradually increased with Co concentration. In-plane axial anisotropy exists for all samples and it is enhanced with a Co concentration of ∼ ` role=`presentation`> ∼ ∼ \sim 40{\%}, corresponding optimal cluster size, and intercluster separation. Segregation and coalescence of Co clusters caused by different Co concentrations strongly affect magnetic properties of the thin films. Therefore, the study revealed that magnetic behavior of Co x ` role=`presentation`> x x _{x} Au insert ignore into journalissuearticles values( 1 − x ); ` role=`presentation`> insert ignore into journalissuearticles values( 1 − x ); insert ignore into journalissuearticles values( 1 − x ); _{insert ignore into journalissuearticles values(1-x);} thin films can be tuned by changing Co concentration.
Keywords : Magnetosputtering, magnetic thin lms, ferromagnetic resonance, magnetic anisotropy