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Main Authors: Zubayer, Anton, Eriksson, Fredrik, Falk, Martin, Lorentzon, Marcus, Palisaitis, Justinas, Klauser, Christine, Nagy, Gyula, Wolf, Philipp M., Pitthan, Eduardo, Holeňák, Radek, Primetzhofer, Daniel, Stenning, Gavin B. G., Glavic, Artur, Stahn, Jochen, Dorri, Samira, Eklund, Per, Birch, Jens, Ghafoor, Naureen
Format: Preprint
Published: 2025
Subjects:
Materials Science
Online Access:https://arxiv.org/abs/2502.07507
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Table of Contents:
  • This study investigates the effects of incorporating 11B4C interlayers into Fe/Si multilayers, with a focus on interface quality, reflectivity, polarization, and magnetic properties for polarized neutron optics. It is found that the introduction of 1 Å and 2 Å 11B4C interlayers significantly improves the interface sharpness, reducing interface width and preventing excessive Si diffusion into the Fe layers. X-ray reflectivity and polarized neutron reflectivity measurements show enhanced reflectivity and polarization, with a notable increase in polarization for 30 Å period multilayers. The inclusion of interlayers also helps prevent the formation of iron-silicides, improving both the magnetic properties and neutron optical performance. However, the impact of interlayers is less pronounced in thicker-period multilayers (100 Å), primarily due to the ratio between layer and interface widths. These results suggest that 11B4C interlayers offer a promising route for optimizing Fe/Si multilayer performance in polarized neutron mirrors.

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