Scaling Behavior and Magnetic Properties for Smx Co5 Films

Abstract Sm x Co 5 ( x = 1.3, 0.7, 0.4) thin films were prepared by magnetron co-sputtering technique. The samples were annealed at 723 K under Ar atmosphere. The annealed time was chosen as 30 min. The hysteresis loops of the samples were measured under the ac applied magnetic field with the period T p (2π/ω), H ( t ) = H 0 sin(ωt), by vibrating sample magnetometer (VSM). The experimental results indicate that, (1) the average hysteresis loop areas as functions of the values of H 0 and ω display a power scaling law with the exponents, A = A 0 + H 0 α ω β ; (2) the x composition of Sm x Co 5 film has evident effect on the scaling behavior and magnetic properties; (3) the anisotropy scaling exponents exist clearly in the anisotropy Sm x Co 5 thin films. Moreover, the scaling behavior of the anisotropy magnetic film was also simulated with Monte Carlo method. The simulated results are consistent with the experimental fact.