The transition to perpendicular magnetization in an ultrathin Co film studied by XMCD and SXRR based magnetometry
|Elisabeth Holub-Krappe 3, Anders Hahlin 1, Hansjörg Maletta 3, Cecilia Andersson 1, Olof Karis 1, Jonathan Hunter Dunn 2, Dimitri Arvanitis 1|
1. Uppsala University (UU), Regementsvägen 1, Uppsala SE-751 21, Sweden
Ultrathin magnetic films are often used as a model system for investigating low dimensional and interfacial effects. Both, surface and volume anisotropy can favor in-plane or out-of-plane magnetization. The easy axis of magnetization can change from in-plane to out-of-plane when decreasing the thickness of the magnetic layer at a fixed temperature, or upon decreasing the temperature at a fixed layer thickness. A prominent example for such a Spin Reorientation Transition (SRT) is an ultrathin Co film, sandwiched between Au layers. Our previous work showed the SRT at the room temperature with decreasing the Au-cap thickness, linked with an 38% enhancement of the Co orbital moment and the hybridization of the Co 3d and Au 5d bands, resulting in a charge transfer from Co to Au.
Presentation: oral at E-MRS Fall Meeting 2003, Symposium B, by Elisabeth Holub-Krappe
See On-line Journal of E-MRS Fall Meeting 2003
Submitted: 2003-05-27 17:11 Revised: 2009-06-08 12:55