Conundrum of strongly coupled supercurrent flow in both under- and overdoped Bi-2212 round wires

Oz, Yavuz; Jiang, J.; Matras, M.; Oloye, Temidayo Abiola; Kametani, F.; Hellstrom, E. E.; Larbalestier, D. C.

doi:10.1103/physrevmaterials.5.074803

Cited by 9 publications

(5 citation statements)

References 55 publications

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“…Song et al found strong Ca segregation at GBs which reduces the GB charge and the screening length and consequently increases the inter grain supercurrent [42]. Indeed, better performance of the cuprates practical conductors is achieved in the overdoped Bi2212 wires and the YBCO films [43,44].…”

Section: Resultsmentioning

confidence: 99%

Strengthened proximity effect at grain boundaries to enhance inter-grain supercurrent in Ba1-K Fe2As2 superconductors

Cheng

Dong²,

Yang³

et al. 2022

Materials Today Physics

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Section: Resultsmentioning

confidence: 99%

Strengthened proximity effect at grain boundaries to enhance inter-grain supercurrent in Ba1-K Fe2As2 superconductors

Cheng

Dong²,

Yang³

et al. 2022

Materials Today Physics

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“…The presence of these well-defined supercurrent paths in models improves the transport current occupancy of the Bi-2223 tape's cross-section a result, the need to rely on intrinsically lower critical current density (Jc) c-axis paths tween dominant ab-plane paths is reduced. Ultimately, this improved connectivity transport current occupancy enhance the Jc of the Bi-2223 tapes [67,68]. Data presented in Table 5 from EDX analysis indicate that the atomic ratio of Bi, Ca, and Cu is 2:2:2:3, with different oxygen ratios obtained for all samples.…”

Section: Microstructure Analysismentioning

confidence: 93%

“…As a result, the need to rely on intrinsically lower critical current density (J c ) c-axis paths between dominant ab-plane paths is reduced. Ultimately, this improved connectivity and transport current occupancy enhance the J c of the Bi-2223 tapes [67,68].…”

Section: Microstructure Analysismentioning

confidence: 98%

Microstructure and Superconducting Properties of Bi-2223 Synthesized via Co-Precipitation Method: Effects of Graphene Nanoparticle Addition

Abdullah,

Kechik,

Kamarudin

et al. 2023

Nanomaterials

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The effects of graphene addition on the phase formation and superconducting properties of (Bi1.6Pb0.4)Sr2Ca2Cu3O10 (Bi-2223) ceramics synthesized using the co-precipitation method were systematically investigated. Series samples of Bi-2223 were added with different weight percentages (x = 0.0, 0.3, 0.5 and 1.0 wt.%) of graphene nanoparticles. The samples’ phase formations and crystal structures were characterized via X-ray diffraction (XRD), while the superconducting critical temperatures, Tc, were investigated using alternating current susceptibility (ACS). The XRD showed that a high-Tc phase, Bi-2223, and a small low-Tc phase, Bi-2212, dominated the samples. The volume fraction of the Bi-2223 phase increased for the sample with x = 0.3 wt.% and 0.5 wt.% of graphene and slightly reduced at x = 1.0 wt.%. The ACS showed that the onset critical temperature, Tc-onset, phase lock-in temperature, Tcj, and coupling peak temperature, TP, decreased when graphene was added to the samples. The susceptibility–temperature (χ′-T) and (χ″-T) curves of each sample, where χ′ and χ″ are the real and imaginary parts of the susceptibility, respectively, were obtained. The critical temperature of the pure sample was also measured.

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“…In the RD view, the points cluster within 30 • of the ab-plane. The uniform distribution between [010] and [110] suggests that no in-plane texture is established, which is different from the quasi-biaxial texture formed from the melt in Bi2212 wires [34]. In the ND-viewed IPF, most points concentrate within 30 • of (001), indicating a partial c-axis texture.…”

Section: Epma Is Shown In Figures 2(e)-(h) One Can See the Uniformly ...mentioning

confidence: 99%

High critical current density in low-cost iron-based superconducting round wires annealed at ambient pressure

Fu,

Dong,

et al. 2024

Supercond. Sci. Technol.

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Superconducting round wires with isotropic architecture are preferred in fabrications of cables and magnets. To diminish the obstacles to supercurrent, e.g., voids, cracks and bubbles, over-pressure heat treatment or hot isostatic pressing is indispensable in the final annealing process. Here, we fabricated a stainless steel/Cu/Ag sheathed Ba0.6K0.4Fe2As2 superconducting round wire without the aid of high-pressure sintering. It was found that high-strength outer sheaths and groove rolling synergistically enhance the core density to ~100 %. Combined with the fiber and concentric texture of the superconducting core, the Jc reaches 4.45×104 A/cm2 at 4.2 K and 10 T. Furthermore, the specially designed conductor architecture not only reduces material costs by lowering the proportion of Ag to ~3.1 %, but also provides high mechanical and thermal stability. This straightforward and cost-effective process can be scaled up for the massive production of long wires for high-field applications.

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Conundrum of strongly coupled supercurrent flow in both under- and overdoped Bi-2212 round wires

Cited by 9 publications

References 55 publications

Strengthened proximity effect at grain boundaries to enhance inter-grain supercurrent in Ba1-K Fe2As2 superconductors

Strengthened proximity effect at grain boundaries to enhance inter-grain supercurrent in Ba1-K Fe2As2 superconductors

Microstructure and Superconducting Properties of Bi-2223 Synthesized via Co-Precipitation Method: Effects of Graphene Nanoparticle Addition

High critical current density in low-cost iron-based superconducting round wires annealed at ambient pressure

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