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arXiv · 2605.14545

Biquadratic exchange coupling effect on the magnetic properties of (Fe/Ti) multilayers

Melissa Yactayo·H. S. Tarazona·O. Copie·J. -C. Rojas-Sánchez·J. Quispe-Marcatoma·C. V. Landauro
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Abstract

This work explores the static and dynamic magnetic properties of weakly antiferromagnetically coupled Fe/Ti superlattices, emphasizing the link between magnetic behavior and structural characteristics. HRTEM and XRD analyses confirm alternating Fe and Ti layers with rough interfaces, especially in upper layers. Magnetic measurements reveal two-step hysteresis loops and a temperature and thickness-dependent interlayer exchange coupling (IEC). A macrospin model incorporating bilinear and biquadratic coupling reproduces the experimental data and supports a phase diagram analysis identifying non-collinear configurations. The results underscore the impact of structural imperfections and highlight the crucial role of biquadratic exchange in Fe/Ti/Fe multilayers.

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Melissa Yactayo, H. S. Tarazona, O. Copie, J. -C. Rojas-Sánchez, J. Quispe-Marcatoma, C. V. Landauro. 2026-05-14. Biquadratic exchange coupling effect on the magnetic properties of (Fe/Ti) multilayers. https://doi.org/10.1109/lanano68466.2025.11512390

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