[ 1] A. E. Berkowitz and K. Takano, JMMM 200, p552 (1999). [ 2] Meiklejohn, Bean PR 102, p1413 (1956) [ 3] J. C. S. Kools, IEEE Trans. Magn. 32, p3165 (1996). [ 4] K.Takano et al., PRL. 79, p1130 (1997). [ 5] P. Kappenberger et al., PRL 91, p267202 (2003). [ 6] H. Ohldag et al., PRL 91, p017203 (2003). [ 7] F.T. Parker et al., PRB 61, pR866 (2000). [ 8] P. J. A. van Schendel et al., JAP 88, p435 (2000). [ 9] Inside a [111] Co2+ ion layer the magnetic moments are ferromagnetically coupled and aligned with the [117] direction. Therefore, if the magnetic spins are aligned along the [117] direction instead of directly along the [111] surface normal the measured magnet moment will be reduced by cos(43.3°), the angle between the [111] and [117] directions. In neglecting this angle, an error of 28% is introduced into the magnetization. However, omitting the cos term makes the calculations comparable to results from other groups. [ 10] S. Maat et al., PRL 87, p087202 (2001). |