Direct deposition of c-axis textured MBCO thick film on unoriented metallic substrate for the development of long superconducting tapes

Wen, Xuejun; Qu, D.; Tent, B.A.; Shi, Donglu; Tomsic, M.; Cowey, L.; White, Marvis

doi:10.1109/77.784679

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…Silver is typically used as a substrate of superconducting material in superconducting tapes and wires of yttrium [1,2], thallium [3,4] or bismuth [5,6] based high temperature superconductors. The direct deposition of YBCO lms on silver substrates without any buer layers is one of the most promising and low-cost method of production of the superconducting tapes [7].…”

Section: Introductionmentioning

confidence: 99%

AC Susceptibility of YBCO 1:2:3 Films on Silver Substrates

et al. 2014

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The YBa2Cu3O δ lms were obtained directly on silver substrates by the sedimentation processes. The thicknesses of these lms are of the order of several tens µ. The temperature dependences of the AC susceptibility of the lms were measured and analyzed. The critical temperatures of these specimens obtained from the dispersion part of AC susceptibility vary from 89.2 K to 92.5 K. The critical currents were calculated from the absorption part of AC susceptibility using the Bean model. The temperature dependences of the critical currents were tted using the GinzburgLandau strong coupling limit approach.

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Section: Introductionmentioning

confidence: 99%

AC Susceptibility of YBCO 1:2:3 Films on Silver Substrates

et al. 2014

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“…The seeded melt-processing techniques have resulted in high values of J c , but are restricted to the processing of simple bulk shapes such as discs or rods. The extension of the melt-processing techniques towards thick films is limited and does not result in microstructures and values of J c similar to those of the bulk materials [6][7][8][9][10]. The ceramic nature coupled with intrinsic material defects limits shaping of the melt-processed bulk materials to required designs, particularly to the dimensions of thick films.…”

Section: Introductionmentioning

confidence: 99%

Recent developments in processing and properties of large grain superconducting YBCO fabrics

Reddy

Schmitz

2002

Supercond. Sci. Technol.

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We highlight recent developments in the manufacture and properties of superconducting YBa2Cu3Oy (Y123) fabrics prepared by an infiltration process using commercial yttria fabrics. We present the processing of single-domain Y123 fabrics in various forms such as free-standing fabrics, thick films on ceramic or metallic substrates, and in long lengths using a multi-seeding technique. In particular, controlled seeding allows for predetermined boundary junctions or single domain fabrics with controlled crystallographic orientation and tailored microstructures. Critical transport current densities (Jc) in single-domain fabrics exceed 5.5 × 104 A cm−2 limited by Joule heating at the contacts when passing a total dc current of 180 A at 77 K and 0 T. For multi-domain fabrics with controlled (110)/(110) grain boundaries a maximum Jc of 2.5 × 104 A cm−2 is observed for the best-coupled boundary junction. The room-temperature resistivity of the fabrics is about an order of magnitude lower than that of bulk monoliths.

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“…The benefit of Ag-alloys has been recently reviewed by Navarro [28]. Some Ag alloys [29] or Ag-Cu clad substrates [30] have already been studied for biaxially oriented coated conductors, but the appropriate texture was not achieved.…”

Section: Introductionmentioning

confidence: 99%

Reinforced {110} textured Ag/Ni composite ribbons for biaxially oriented YBCO coated tapes

Suo

Genoud

Schindl

et al. 2001

Supercond. Sci. Technol.

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New, mechanically reinforced, {110} textured Ag composite ribbons were fabricated as possible inexpensive substrates for coated conductors without any buffer layer. The key part of this work was the use of a thin but textured Ag outlayer on an AgMg, Ni, or Ni alloys core that ensures the mechanical reinforcement while decreasing the amount of Ag. A thin Cu (50 µm) foil was intercalated between rectangular Ag and AgMg, Ni, or Ni alloys pieces to obtain a tough bond. After sintering, the ingots sustained a cold plastic deformation up to thicknesses of 300, 100 and 50 µm without any intermediate annealing. The prepared composite ribbons were then recrystallized to obtain the {110} texture in the top Ag layer. For the Ag/AgMg ribbons, a further annealing in flowing oxygen was performed to reinforce the ribbons by an internal oxidation process in the AgMg layer without changing the {110} 011 texture in the Ag outerlayer. A unique and stable {110} 011 texture was obtained in Ag/Ni composite ribbons after annealing at 800 • C. The highest degree of texture was observed in 300 µm thick Ag/Ni ribbon, x-ray orientation distribution function and electro backscattered diffraction (EBSD) analysis of the top Ag layer in this ribbon revealed a sharp {110} 011 texture with an in-plane misorientation angle of 10-15 • . Meanwhile, a promising {110} 011 texture was also found in 50 µm thick ribbons with 25 • in-plane misorientation angle. In the last case, a substrate with no more than 16 µm of the textured Ag layer was produced by this new technique, which decreased the total amount of Ag by 40% compared with pure Ag ribbons of the same thickness.

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Direct deposition of c-axis textured MBCO thick film on unoriented metallic substrate for the development of long superconducting tapes

Cited by 6 publications

References 7 publications

AC Susceptibility of YBCO 1:2:3 Films on Silver Substrates

AC Susceptibility of YBCO 1:2:3 Films on Silver Substrates

Recent developments in processing and properties of large grain superconducting YBCO fabrics

Reinforced {110} textured Ag/Ni composite ribbons for biaxially oriented YBCO coated tapes

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