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Figure 3
As in Fig. 2[link], the information metric Mathematical equation quantifies the FI-predicted constraint on the SLB parameters where higher values are more informative. Plots of I as a function of (a) trial MRL thickness and (b) SiO2 capping layer thickness; (c) nuclear and (d) magnetic SLD of the trial MRL; (e) the resulting SLD profile after optimization; and (f) corresponding model reflectivity and simulated data for spin-up and -down. The optimal nuclear SLD of the trial MRL reduced to 5.1 × 10−6 Å−2 from a nominal value of 7.8 × 10−6 Å−2 for Fe. On the other hand, the optimal magnetic SLD of the trial MRL reached 6.0 × 10−6 Å−2, the upper bound of the varying parameter range, in contrast to 4.6 × 10−6 Å−2 for Fe from the measurements performed with POLREF.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 59| Part 4| August 2026| Pages 1192-1199
https://doi.org/10.1107/S160057672600539X
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