Multilayer ceramic architectures based on YBa₂Cu₃O₇AlO₂/YBa₂Cu₃O₇ and YBa₂Cu₃O₇AgO₂/YBa₂Cu₃O₇ fibers produced by solution blow spinning
Victor Hugo Botari Pacheco, Edimar A. S. Duran, Rafael Zadorosny
Universidade Estadual Paulista "Júlio de Mesquita Filho" - FEIS
Abstract
High-temperature superconductors such as YBa₂Cu₃O₇−δ (YBCO) exhibit type-II behavior, with vortex formation under applied magnetic fields [1,2]. In this regime, vortex motion driven by transport currents limits the critical current density (Jc) [3]. However, YBCO still faces challenges related to mechanical fragility and microstructural control, especially when processed at the nanoscale [4,5].
This work proposes a dual-engineering strategy for YBCO nanofibers produced by solution blow spinning (SBS). First, multilayer stacking is used to form dense and interconnected fibrous networks, improving mechanical integrity. Second, the effects of silver (Ag) and aluminum (Al) incorporation into the YBCO matrix are investigated. Silver is expected to enhance intergranular coupling and flux pinning, while low Al concentrations may reinforce the ceramic matrix without significantly affecting the superconducting transition temperature (Tc).
The high porosity of fibrous mats may also enable efficient oxygen diffusion, promoting homogeneous oxygenation under ambient pressure. Overall, this approach aims to combine mechanical stability, superconducting performance, and scalable processing, making YBCO nanofibers promising for advanced applications such as superconducting nanowire single-photon detectors (SNSPDs) [4,5].
References
[1] Tinkham, M. Introduction to Superconductivity. 2nd ed. McGraw-Hill, 1996.
[2] Abrikosov, A. A. On the magnetic properties of superconductors of the second group. Sov. Phys. JETP 5(6), 1174–1182 (1957).
[3] Blatter, G., Feigel’man, M. V., Geshkenbein, V. B., Larkin, A. I., & Vinokur, V. M. Vortices in high-temperature superconductors. Reviews of Modern Physics 66(4), 1125–1388 (1994).
[4] Larbalestier, D., Gurevich, A., Feldmann, D. M., & Polyanskii, A. High-Tc superconducting materials for electric power applications. Nature 414(6861), 368–377 (2001).
[5] Obradors, X., & Puig, T. Coated conductors for power applications: materials challenges. Superconductor Science and Technology 27(4), 044003 (2014).
This work proposes a dual-engineering strategy for YBCO nanofibers produced by solution blow spinning (SBS). First, multilayer stacking is used to form dense and interconnected fibrous networks, improving mechanical integrity. Second, the effects of silver (Ag) and aluminum (Al) incorporation into the YBCO matrix are investigated. Silver is expected to enhance intergranular coupling and flux pinning, while low Al concentrations may reinforce the ceramic matrix without significantly affecting the superconducting transition temperature (Tc).
The high porosity of fibrous mats may also enable efficient oxygen diffusion, promoting homogeneous oxygenation under ambient pressure. Overall, this approach aims to combine mechanical stability, superconducting performance, and scalable processing, making YBCO nanofibers promising for advanced applications such as superconducting nanowire single-photon detectors (SNSPDs) [4,5].
References
[1] Tinkham, M. Introduction to Superconductivity. 2nd ed. McGraw-Hill, 1996.
[2] Abrikosov, A. A. On the magnetic properties of superconductors of the second group. Sov. Phys. JETP 5(6), 1174–1182 (1957).
[3] Blatter, G., Feigel’man, M. V., Geshkenbein, V. B., Larkin, A. I., & Vinokur, V. M. Vortices in high-temperature superconductors. Reviews of Modern Physics 66(4), 1125–1388 (1994).
[4] Larbalestier, D., Gurevich, A., Feldmann, D. M., & Polyanskii, A. High-Tc superconducting materials for electric power applications. Nature 414(6861), 368–377 (2001).
[5] Obradors, X., & Puig, T. Coated conductors for power applications: materials challenges. Superconductor Science and Technology 27(4), 044003 (2014).
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