Observation by SANS and PNR of pure Neel-type domain wall profiles and skyrmion suppression below room temperature in magnetic [Pt/CoFeB/Ru]₁₀ multilayers.

ABSTRACT: We report investigations of the magnetic textures in periodic multilayers [Pt(1 nm)/(CoFeB(0.8 nm)/Ru(1.4 nm)]₁₀ using polarised neutron reflectometry (PNR) and small-angle neutron scattering (SANS). The multilayers are known to host skyrmions stabilized by Dzyaloshinskii-Moriya interactions induced by broken inversion symmetry and spin-orbit coupling at the asymmetric interfaces. From depth-dependent PNR measurements, we observed well-defined structural features and obtained the layer-resolved magnetization profiles. The in-plane magnetization of the CoFeB layers calculated from fitting of the PNR profiles is found to be in excellent agreement with magnetometry data. Using SANS as a bulk probe of the entire multilayer, we observe long-period magnetic stripe domains and skyrmion

SUBMITTER: Ukleev V 

PROVIDER: S-EPMC10919321 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature