Enhancement of magneto-optical Kerr effect for Co ultra-thin film on Pt(1 1 1) with Ag buffer layer

The magnetic properties of Co/1ML Ag/Pt(111) have been monitored by magneto-optical Kerr effect. We find that the magnetization easy axis changes its direction from the out-of-plane to the in-plane when dCo⩾2ML. In the annealing studies of 1ML Co/1ML Ag/Pt(111), the result shows that the enhancement...

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Veröffentlicht in:	Journal of magnetism and magnetic materials 2004-11, Vol.282 (1), p.69-72
Hauptverfasser:	Ho, H.Y., Tzeng, C.L., Su, C.W., Shern, C.S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Cobalt Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Magnetic properties and materials Magnetic properties of monolayers and thin films Magnetic properties of surface, thin films and multilayers Magneto-optic Kerr effect Metals. Metallurgy Perpendicular magnetic anisotropy Physics Platinum Silver
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Zusammenfassung:	The magnetic properties of Co/1ML Ag/Pt(111) have been monitored by magneto-optical Kerr effect. We find that the magnetization easy axis changes its direction from the out-of-plane to the in-plane when dCo⩾2ML. In the annealing studies of 1ML Co/1ML Ag/Pt(111), the result shows that the enhancement in perpendicular magnetic anisotropy is strongly related to the formation of Co–Pt alloy. The atomic exchange between Co and Ag cause the increase of the coercivity. The possible mechanisms of the enhancement in perpendicular magnetic anisotropy and coercivity are discussed.
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2004.04.016