Iron diffusivity into superconducting YBa2Cu3O7− at oxygen-assisted sintering: structural, magnetic, and transport properties

Pęczkowski, Paweł; Zachariasz, P.; Kowalik, M.; Tokarz, W.; Naik, S. Pavan Kumar; Żukrowski, J.; Jastrzębski, Cezariusz; Dadiel, Longji; Tabiś, Wojciech; Gondek, Ł.

doi:10.1016/j.jeurceramsoc.2021.06.018

Cited by 12 publications

(5 citation statements)

References 51 publications

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“…Therefore, seeds with cubic shapes were employed for all growth experiments in order to avoid the growth of several grains. The bulk YBCO and GdBCO samples obtained in this way were additionally annealed in oxygen flow using a tubular furnace at 460 • C-400 • C for 150 h to optimize the superconducting properties [30,31].…”

Section: Methodsmentioning

confidence: 99%

Investigation of high-energy ultrasonication of RE₂BaCuO₅(RE = Y, Gd) on the growth and superconducting properties of REBa₂Cu₃O_7−δtop-seeded melt textured bulks

Naik¹,

Hagiwara²,

Ishibashi³

et al. 2022

Supercond. Sci. Technol.

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Recently, the improvement of flux pinning performance of REBa2Cu3O7-δ (REBCO) bulk was achieved employing high energy ultrasonic irradiation (up to 300 W and 60 min) prior to the infiltration-growth process. Here, we demonstrate that higher ultrasonic power and shorter duration treatment (450 W for 30 min) of the RE2BaCuO5 (RE211, RE = Y, Gd) powder produces individual, nanometer-sized and surface damaged ultrasonically pre-treated RE211 particles (RE211Ultra). We study the growth of YBCO and GdBCO systems via top-seeded melt-growth (TSMG) method and with the addition of 30 mol% of RE211Ultra, which were pre-treated by high-energy ultrasonication and compared with the conventional method. Isothermal growth experiments clarified that the addition of RE211Ultra particles enables faster and more effective crystal growth via an improved peritectic reaction due to their size in the nanometer range and due to the presences of sharp edges, which is crucial for growing large, single grain bulks of REBCO. Microstructural investigations by scanning electron microscopy indicated the presence of 2 differently sized RE211 inclusions within the bulk GdBCO and YBCO superconductors. All samples showed an onset of superconductivity at ~92 K or above. Utilizing the effective growth temperature window and the addition of RE211Ultra, single grain bulks of GdBCO and YBCO were fabricated by the slow-cooling method. The field dependence critical current density (Jc) of the bulk samples using RE211Ultra were found to exhibit superior performance over the standard GdBCO/ YBCO samples due to significant changes of sample growth and of their microstructures. Here, we discuss various factors affecting the addition of RE211Ultra on the development of the microstructure, the growth of bulk, single grain materials and further, the superconducting properties of different REBCO superconductors.

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Section: Methodsmentioning

confidence: 99%

Investigation of high-energy ultrasonication of RE₂BaCuO₅(RE = Y, Gd) on the growth and superconducting properties of REBa₂Cu₃O_7−δtop-seeded melt textured bulks

Naik¹,

Hagiwara²,

Ishibashi³

et al. 2022

Supercond. Sci. Technol.

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“…The MCE of (Mn,Fe) 2 (P,Si) can be tuned by varying the Fe and Si content [26][27][28]. We have selected x = 0.6 in Mn 2−x Fe x Si 0.5 P 0.5 due to the minimized hysteresis reported in ref.…”

Section: Methodsmentioning

confidence: 99%

Enhanced Magnetocaloric Properties of Annealed Melt-Extracted Mn1.3Fe0.6P0.5Si0.5 Microwires

Luo

Law

Shen

et al. 2022

Metals

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The highly regarded Fe2P-based magnetocaloric materials are usually fabricated by ball milling, and require an additional extended annealing treatment at high temperatures (at temperatures up to 1423 K for several hours to days). In this work, we show that fabricating Mn1.3Fe0.6P0.5Si0.5 into the form of microwires attained 82.1 wt.% of the desired Fe2P phase in the as-cast state. The microwires show a variable solidification structure along the radial direction; close to the copper wheel contact, Fe2P phase is in fine grains, followed by dendritic Fe2P grains and finally secondary (Mn,Fe)5Si3 phase in addition to the dendritic Fe2P grains. The as-cast microwires undergo a ferro- to para-magnetic transition with a Curie temperature of 138 K, showing a maximum isothermal magnetic entropy change of 4.6 J kg−1 K−1 for a magnetic field change of 5 T. With further annealing, a two-fold increase in the maximum isothermal magnetic entropy change is found in the annealed microwires, which reveal 88.1 wt.% of Fe2P phase.

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“…In recent years, with the evolution of REBCO bulks [ 14 , 15 ], REBCO CC tapes have undergone a revolutionary development, e.g., by improving REBCO CC tape industrial production technology, manufacturers can construct single REBCO CC tapes longer than 1 km with especially uniform and high critical currents ( I c ) [ 16 , 17 , 18 ]. However, they still cannot meet the requirements of large applications including magnet coils and power cables which are several kilometers long [ 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Mechanical Behavior and Electromechanical Properties of Solder-Jointed REBCO-Coated Conductors

Liao,

Wang,

Chen

et al. 2024

Materials

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As the second-generation high-temperature superconducting conductors, rare earth–barium–copper–oxide (REBCO) coated conductor (CC) tapes have good potential as high-field and high-energy superconductors. In superconducting applications, several joints are required for conjugating comparatively short REBCO CC tapes. Soldering lap joints are the simplest and most commonly applied REBCO CC joints. In addition to joint resistance, the mechanical behavior and electromechanical properties are also crucial for superconducting applications. In this paper, the electromechanical properties and mechanical behaviors of soldering lap joints at 77 K under a self-field were studied. The mechanical behavior was addressed by using a full three-dimensional multilayer elastic–plastic finite element model (FEM) with REBCO CC tape main layers and solder connecting layers. Then, the electromechanical properties were analyzed by using Gao’s strain-Ic degradation general model on the basis of the FEM results. Both the mechanical behavior and electromechanical properties were verified by experimental results. The effects of soldering lap conditions including lap length, soldering thickness and lap style on the electromechanical properties and mechanical behaviors were discussed. The results indicate that shorter overlap lengths and a thinner solder can reduce the premature degradation of Ic due to stress concentrations nearby the joint edges; moreover, the irreversible critical strain is significantly higher in the back-to-back joint approach compared to the widely used face-to-face joint approach.

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Iron diffusivity into superconducting YBa2Cu3O7− at oxygen-assisted sintering: structural, magnetic, and transport properties

Cited by 12 publications

References 51 publications

Investigation of high-energy ultrasonication of RE₂BaCuO₅(RE = Y, Gd) on the growth and superconducting properties of REBa₂Cu₃O_7−δtop-seeded melt textured bulks

Investigation of high-energy ultrasonication of RE₂BaCuO₅(RE = Y, Gd) on the growth and superconducting properties of REBa₂Cu₃O_7−δtop-seeded melt textured bulks

Enhanced Magnetocaloric Properties of Annealed Melt-Extracted Mn1.3Fe0.6P0.5Si0.5 Microwires

Numerical Study on Mechanical Behavior and Electromechanical Properties of Solder-Jointed REBCO-Coated Conductors

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Iron diffusivity into superconducting YBa2Cu3O7− at oxygen-assisted sintering: structural, magnetic, and transport properties

Cited by 12 publications

References 51 publications

Investigation of high-energy ultrasonication of RE2BaCuO5(RE = Y, Gd) on the growth and superconducting properties of REBa2Cu3O7−δtop-seeded melt textured bulks

Investigation of high-energy ultrasonication of RE2BaCuO5(RE = Y, Gd) on the growth and superconducting properties of REBa2Cu3O7−δtop-seeded melt textured bulks

Enhanced Magnetocaloric Properties of Annealed Melt-Extracted Mn1.3Fe0.6P0.5Si0.5 Microwires

Numerical Study on Mechanical Behavior and Electromechanical Properties of Solder-Jointed REBCO-Coated Conductors

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Product

Resources

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Investigation of high-energy ultrasonication of RE₂BaCuO₅(RE = Y, Gd) on the growth and superconducting properties of REBa₂Cu₃O_7−δtop-seeded melt textured bulks

Investigation of high-energy ultrasonication of RE₂BaCuO₅(RE = Y, Gd) on the growth and superconducting properties of REBa₂Cu₃O_7−δtop-seeded melt textured bulks