Fabrication of YBa 2 Cu3O7 Superconducting Thick Film on CeO 2 /Y2 O3 /CeO 2 -bufferedNi-electroplated Cu/SUS316 Laminated Tape

GI, Ichi; Doi, Toshiya; KATSUME, Akihito; Miyanaga, Takafumi; Inada, Mitsuru; Hakuraku, Yoshinori; Shima, Kunihiro; Kubota, Shuichi; Kashima, N.; Nagàya, Shigeo

doi:10.2221/jcsj.47.276

Cited by 2 publications

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References 11 publications

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“…Thus far, we have reported that the biaxially oriented YBCO thin lms with high J c could be obtained on the {100}<001> textured Cu tapes 18) . The YBCO thin lm (270 nm thick) epitaxially grown on the Ni/CeO 2 /YSZ (yttria stabilized zirconia)/CeO 2 buffered Cu/SUS316 lamination tape [19][20][21] had a high J c of 3.6 MA/cm 2 , and that it was possible to increase the lm thickness while maintaining the J c to obtain high I c 22,23) . The roles that the conductive buffer layers should satisfy are not only low electrical resistivity, but also structural compatibility and chemical inertness with Cu and REBCO, low diffusion coef cient of oxygen and metal elements.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of YBa2Cu3O7 Superconducting Film on {100}<001> Textured Cu Tape via Conductive Buffer Layers

et al. 2017

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Long-length coated conductors (CCs) have recently become commercially available, serving as a promising candidate for use in electric power applications. However, the material and manufacturing costs are high, which discourages their use in a wide range of commercially feasible products. REBa 2 Cu 3 O 7 (REBCO; RE: Y or rare-earth elements) superconducting lms with high critical current density (J c) have been grown on cube-textured metal tapes to develop CCs for high temperature, high magnetic eld applications. In the standard approach, a biaxially oriented YBCO layer is deposited on a Y 2 O 3 /Y 2 O 3-stabilized ZrO 2 /CeO 2 buffered Ni-W tape. CCs become highly resistive when they are quenched; therefore, for reliable and safe application, it is necessary to attach low-resistivity metal layers, such as Cu and/or Ag, to the CCs to stabilize and protect them from damage due to quenching. Presently, insulative oxides are used for the buffer layers; thus, thick Ag and Cu layers are required to be deposited as stabilizer layers on the YBCO layer. However, the high material and process costs for obtaining the Ag and Cu layers are one of the major obstacles to achieving low-cost CCs. The use of conductive buffer layers instead of insulative reduces the cost of CCs. In this paper, we propose a new con guration for CCs: YBCO deposited on a conductive Sr(Ti 0.95 Nb 0.05)O 3 buffered Ni-electroplated {100}<001> textured Cu and SUS316 lamination tape. Sr(Ti 0.95 Nb 0.05)O 3 was epitaxially grown on the Ni-electroplated {100}<001> textured Cu tape, and its resistivity was as low as 2.5 mΩ-cm at 77 K. An excellent J c of 2.6 × 10 6 A/cm 2 was achieved at 77 K under a magnetic selfeld for the YBCO/Sr(Ti 0.95 Nb 0.05)O 3 /Ni/Cu/SUS316 tape. We believe that Sr(Ti 0.95 Nb 0.05)O 3 is a promising candidate for the conductive buffer layer material.

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Section: Introductionmentioning

confidence: 99%

Fabrication of YBa2Cu3O7 Superconducting Film on {100}<001> Textured Cu Tape via Conductive Buffer Layers

et al. 2017

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Fabrication of YBa2Cu3O7 Superconducting Film on {100}〈001〉 Textured Cu Tape via Conductive Buffer Layers

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et al. 2016

J. Japan Inst. Metals and Materials

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Long length coated conductors (CCs) have recently become commercially available, serving as a promising candidate for use in electric power applications. However, the cost of materials and manufacturing is high, which discourages their use in widespread commercially feasible products.REBa 2 Cu 3 O 7 (REBCO; RE: Y or rare earth elements) superconducting films with high critical current density ( J c ) have been grown on cube textured metal tapes for the purpose of developing CCs for high temperature, high magnetic field applications. In the standard approach, a biaxially crystal aligned YBCO layer is deposited on a Y 2 O 3 /Y 2 O 3  stabilized ZrO 2 /CeO 2 buffered Ni W tape. CCs become highly resistive when they are quenched, therefore, to manufacture reliable and safe applications, it is necessary to attach low resistive metal layers such as Cu and/or Ag to the CCs to stabilize and protect from damage due to quenches. Presently, insulative oxides are used for the buffer layers, thus thick Ag and Cu layers are required to be deposited as the stabilizer layers on the YBCO layer. However, the high material and process costs for the Ag and Cu layers are one of the major obstacles for achieving low cost CCs. Use of conductive buffer layers instead of the insulative ones will allow CCs to be less expensive. In this paper, we propose a new configuration for CCs: YBCO deposited on a conductive Sr(Ti 0.95 Nb 0.05 )O 3 buffered Ni electroplated {100} 〈001〉textured Cu and SUS316 lamination tape. Sr(Ti 0.95 Nb 0.05 )O 3 was epitaxially grown on the Ni electroplated {100} 〈001〉textured Cu tape and its resistivity was low as 2.5 mQ cm at 77 K. Excellent J c of 2.6×10 6 A/cm 2 was achieved at 77 K under a magnetic self field for the YBCO/Sr(Ti 0.95 Nb 0.05 )O 3 /Ni/Cu/SUS316 tape. We believe that Sr(Ti 0.95 Nb 0.05 )O 3 is one of promising candidates for the conductive buffer layer material.

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Fabrication of YBa 2 Cu3O7 Superconducting Thick Film on CeO 2 /Y2 O3 /CeO 2 -bufferedNi-electroplated Cu/SUS316 Laminated Tape

Cited by 2 publications

References 11 publications

Fabrication of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> Superconducting Film on {100}<001> Textured Cu Tape via Conductive Buffer Layers

Fabrication of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> Superconducting Film on {100}<001> Textured Cu Tape via Conductive Buffer Layers

Fabrication of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> Superconducting Film on {100}〈001〉 Textured Cu Tape via Conductive Buffer Layers

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