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Figure 3
Magnetic Guinier analysis on nanocrystalline Co. (a) Guinier plot ln(dΣSM/dΩ) versus q2 and fits (solid lines) to equation (19)[link] at selected values of the internal magnetic field (see inset). (b) Plot of RGSM2 versus Hi−1 and fit (solid line) to equation (20)[link]. In the fitting routine, RGH and A were treated as adjustable parameters. (c) Field dependence of (dΣSM/dΩ) (q = 0). The solid line represents  dΣSM/dΩ (q = 0) ∝ Hi−2. In (b) and (c), the last two data points (open symbols), corresponding to internal fields of 0.213 and 0.252 T, have been excluded from the fit analysis.

IUCrJ
Volume 7| Part 1| January 2020| Pages 136-142
ISSN: 2052-2525
https://doi.org/10.1107/S2052252519016439