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Davydov, Albert
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Publications (4/4 displayed)
- 2024Single‐Phase <i>L</i>1<sub>0</sub>‐Ordered High Entropy Thin Films with High Magnetic Anisotropycitations
- 2023Energy Efficient Neuro-inspired Phase Change Memory Based on Ge4 Sb6 Te7 as a Novel Epitaxial Nanocomposite.citations
- 2020On-the-fly closed-loop materials discovery via Bayesian active learningcitations
- 2018The 2019 materials by design roadmapcitations
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article
Single‐Phase <i>L</i>1<sub>0</sub>‐Ordered High Entropy Thin Films with High Magnetic Anisotropy
Abstract
<jats:title>Abstract</jats:title><jats:p>The vast high entropy alloy (HEA) composition space is promising for discovery of new material phases with unique properties. This study explores the potential to achieve rare‐earth‐free high magnetic anisotropy materials in single‐phase HEA thin films. Thin films of FeCoNiMnCu sputtered on thermally oxidized Si/SiO<jats:sub>2</jats:sub> substrates at room temperature are magnetically soft, with a coercivity on the order of 10 Oe. After post‐deposition rapid thermal annealing (RTA), the films exhibit a single face‐centered‐cubic phase, with an almost 40‐fold increase in coercivity. Inclusion of 50 at.% Pt in the film leads to ordering of a single <jats:italic>L</jats:italic>1<jats:sub>0</jats:sub> high entropy intermetallic phase after RTA, along with high magnetic anisotropy and 3 orders of magnitude coercivity increase. These results demonstrate a promising HEA approach to achieve high magnetic anisotropy materials using RTA.</jats:p>