Abstract
The Fe thin films with different initial thickness were prepared on MgO(001) substrate. Ar+ ion beam having energy of 3 keV was used to sputter the film at incident angle of 80 degrees with respect to the film normal. Low energy electron diffraction (LEED) was employed to study the morphology and crystal quality of the film. Moreover surface magneto-optical Kerr effect (SMOKE) and anisotropic magnetoresistance (AMR) setups were used to investigate the magnetic properties of the Fe film. The values of magnetocrystalline anisotropy K-1 and induced in-plane uniaxial magnetic anisotropy (UMA) K-u were derived from torque curves on the base of AMR results and found that the value of K-u was increasing with increasing the sputtering time while the intrinsic magnetocrystalline anisotropy K-1 was not affected by sputtering. Similarly it is observed that the value of K-1 increases with the thickness. We noted that ion beam sputtering can be used as an effective technique of manipulating the magnetic anisotropy of ultrathin magnetic films. (C) 2017 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license