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Spin-flip scattering from a magnetic non-collinear resonator. Example of an ESCAPE notebook
Khaydukov, Y.MLZ* ; Korolkov, D.
2022
Keyword(s): Instrument and Method Development (1st) ; Magnetism (2nd)
Note: Neutron spin-flip (SF) scattering is a purely magnetic channel resulting from the scattering of neutrons on non-collinear magnetization. The SF scattering is an important channel in study of magnetic heterostructures with nontrivial magnetic ordering, such as helicoids, magnetic vortices, skyrmions, etc.For precise quantitative analysis of SF data, it is necessary to take into account the characteristics of the polarization devices, such as polarizing efficiencies of the polarizer and analyzer, as well as the efficiencies of spin flippers. Non-100% efficiency of these devices leads to the fact that the real SF signal is polluted by the so-called "spin leakage". Fit of the SF data without taking into account the spin-leakage will lead to a systematic error in determining the non-collinearity parameters.In this notebook, we consider the simultaneous data fit of non-SF and SF channels from a magnetic non-collinear resonator of nominal structure Pt(3nm)/Nb(25nm)/Co(3nm)/Nb(25nm)//Al2O3. The system was used in study the hydrogenation kinetics of thin films through the analysis of the resonance position in the SF channel, details can be found in L. Guasco et al, Nat. Commun. 2022 .
Contributing Institute(s):
- NREX (NREX)
Experiment(s):
- NREX: Neutron reflectometer with X-ray option (NL1)
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