Magnetic Anisotropy and Superconducting Properties of NbScTiZr Eutectic High-Entropy Alloy
DOI:
https://doi.org/10.31224/4784Keywords:
High-entropy alloy (HEA), Eutectic alloy, Superconductivity, Magnetic anisotropy, NbScTiZr alloy, Type-II superconductor, Vortex pinning, Critical current density (Jc), Upper critical field (Hc2), Spin-orbit coupling, Eutectic microstructure, X-ray diffraction (XRD), Transmission electron microscopy (TEM), Magnetization hysteresis, Electrical resistivity, Cryogenic materials, Disordered superconductors, Multifunctional alloys, Condensed matter physicsAbstract
The eutectic high-entropy alloy NbScTiZr exhibits tunable superconducting properties influenced by crystallographic anisotropy and lattice strain. We model the anisotropic energy (E*) to explain its critical temperature (T_c), upper critical field (H_c2), and flux pinning. E* calculations for [100], [110], and [111] directions reveal maximal anisotropy along [111] (E* = 1.5122), correlating with enhanced flux pinning in 400°C-annealed samples. Specific heat measurements indicate strong-coupled superconductivity (2Δ(0)/k_BT_c = 4.43-4.85) in samples annealed above 600°C. These results demonstrate how strain engineering can optimize superconducting performance in eutectic HEAs
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Copyright (c) 2025 Sudhakar Geruganti
This work is licensed under a Creative Commons Attribution 4.0 International License.
