Uniaxial polarization analysis of bulk ferromagnets: theory and first experimental results

Malyeyev, A.; Titov, I.; Dewhurst, C.; Suzuki, K.; Honecker, D.; Michels, A.

doi:10.1107/S1600576722003508

Journal of Applied Crystallography Journal of Applied
Crystallography

IUCr IT WDC

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Figure 6
Qualitative comparison between experiment and theory. (a)–(d) Two-dimensional experimental polarization $[P_{{\rm f}\perp}^{+}({\bf q})]$ of the scattered neutrons of NANOPERM [(Fe_0.985Co_0.015)₉₀Zr₇B₃] at a series of applied magnetic fields (see insets). $[{\bf H}_{0}]$ is horizontal in the plane. The range of momentum transfers is restricted to $[q\,\lesssim\, 0.33\,{\rm nm}^{-1}]$ . (e)–(h) Prediction by the analytical micromagnetic theory (no free parameters) using the experimental ratio $[\alpha_{{\rm exp}}(q)]$ [equation (63)

] and the structural ( $[\xi_{{\rm M}} = \xi_{{\rm H}} = D/2 = 7.5\,{\rm nm}]$ ) and magnetic ( A,M₀) interaction parameters of NANOPERM [see text, Michels et al. (2012