Papers by Keyword: X-Ray Magnetic Circular Dichroism

Abstract: Utilizing X-ray magnetic circular dichroism spectra the thickness effect on spin moment is examined in amorphous Co_0.9Fe_0.1 films fabricated by RF magnetron sputtering. As film thickness increases from 5nm to 50nm, the variations of spin moments for Fe is a gradual decrease from 1.87μB to 1.70μB, while for Co it increases from 1.41μB to 1.69μB monotonously. Based on magnetic dead layer (MDL) model, the above changes are well explained, and the thickness of MDL, 0.83 nm, is estimated as well. That is not changed with increasing CoFe layer thickness.

Abstract: The elemental magnetic moments of Co and Cr in CoCrPt films were investigated using xray magnetic circular dichroism (XMCD). The spin and orbital moments of Co was calculated using the sum rules; it was found that the magnetic moment of Co in CoCrPt films was dominated by spin moment contribution. The total magnetic moment of Co was found to be lower than that of bulk Co. Further, the Cr moment was aligned anti-ferromagnetically with respect to Co, resulting in a decrease of saturation magnetization (Ms) in CoCrPt films.