The full potential linearized augmented plane wave method (FLAPW) including the spin-orbit coupling has been used to study the structural, electronic and magnetic properties of GdCo5 compound. The calculations were performed within the local spin density approximation (LSDA) as well as Coulomb corrected LSDA + U approach. The study revealed that the LSDA + U method gave a better representation of the band structure, density of states and magnetic moments than LSDA. It was found that the spin magnetic moment of Co (2c) and Co (3g) atoms in the studied compound is smaller compared to the one in bulk Co. The optical and magneto-optical properties and the magneto-optical Kerr effect have also been investigated.
We have grown by molecular beam epitaxy (MBE) 300 Å Fe films on single crystal MgO(001) substrates with Ag buffer layer with a thickness varying from 0 to 150 Å. The epitaxial growth and structure quality of the films were verified by reflection high-energy electron diffraction (RHEED) and X-ray diffraction. Small angle X-ray diffraction revealed the dependence of interfacial roughness on the thickness of Ag buffer layer. In-plane magnetic anisotropy was determined by means of magneto-optic Kerr effect at room temperature. The analysis of hysteresis loops showed a dependence of uniaxial anisotropy field H u and coercive fields on the Ag buffer layer.
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