Abstract

We investigated the thickness-driven spin-reorientation transition (SRT) between in-plane and perpendicular easy axes in ultrathin magnetic films. Coherent rotation model calculations show that one can distinguish transition pathways via a canted state from those involving a state of coexisting phases by utilizing magnetic susceptibility measurements. Surface/interface anisotropy constants and the influence of external fields on the SRT are also explored. Quantitative agreement between the experiment and our model is shown for the Co/Au(111) system.

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