Fabrication of Coated Conductors by Multiple-Stage CVD

Kashima, N.; Niwa, T.; Mori, Masami; Nagàya, Shigeo; Muroga, T.; Miyata, S.; Watanabe, T.; Yamada, Yutaka; Izumi, Teruo; Shiohara, Yuh

doi:10.1109/tasc.2005.847773

Cited by 36 publications

(13 citation statements)

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“…It's because MOCVD has an advantageous capability to enlarge deposition area with high deposition rate [1], [4]. We have investigated a high rate deposition of YBCO layer by 6-stage CVD equipment [5], [7], in which the reactor chamber has six small reactors that are arranged in a line along the tape transferring direction, on a highly biaxially textured pulsed-laser-deposition capped ion-beam-assisted-deposition (IBAd)-Gd-Zr-oxide (GZO) buffer layer. Our multi-stage CVD contains the reactor chamber with small reacting zone and each material gas nozzle, so that increase the number of depositing stage in a line enlarges deposition area.…”

Section: Rapid Formation Of 200 M-long Ybco Coatedmentioning

confidence: 99%

Rapid Formation of 200 m-long YBCO Coated Conductor by Multi-Stage CVD

Watanabe

Kashima

Suda

et al. 2007

IEEE Trans. Appl. Supercond.

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Toward the industrialization of YBa 2 Cu 3 O 7 x (YBCO) coated conductors for practical applications, metal-organic chemical vapor deposition (MOCVD) has been investigated. We applied multi-stage MOCVD to achieve high-speed production of coated conductor because the increase of the number of depositing stages placed in a line could enlarge deposition area. Using 12-stage CVD, we succeeded in deposition of highly biaxially oriented YBCO layer at tape transfer speed of 50 m/h on the CeO 2 capped ion-beam-assisted-deposition (IBAD) Gd 2 Zr 2 O 7 (GZO) buffered Hastelloy tape, and achieved high critical current density ( c ) exceeding 2 MA cm 2 in a short sample. And it was found that lowering substrate temperature according to YBCO layer growth was effective to increase c . Using this method, high critical current ( c ) of 174 A was achieved by 1 m thick YBCO layer which passed through 12-stage CVD, and 227 A by 1 m thick YBCO layer deposited by 6-stage one. Based on these results, three 200 m-class YBCO layers were deposited by multiple depositions at tape speed of 50 m/h each, using the 12-stage CVD system. A 203 m-long YBCO layer was successfully deposited with end-to-end c of 92.8 A, so that the multiplication of c and length reached 18.8 kA m. These results indicate that a multi-stage CVD technique is useful for a rapid fabrication of long YBCO coated conductor.

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Section: Rapid Formation Of 200 M-long Ybco Coatedmentioning

confidence: 99%

Rapid Formation of 200 m-long YBCO Coated Conductor by Multi-Stage CVD

Watanabe

Kashima

Suda

et al. 2007

IEEE Trans. Appl. Supercond.

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“…[1][2][3][4] Up to now, vacuum techniques have resulted in the best properties for high temperature superconductor (HTSC) thin films. [5][6][7][8] However, to reduce production costs and improve scalability, a shift towards non-vacuum conditions would be preferred. The use of chemical solution deposition (CSD) is therefore widely considered to be the most promising route for upscaled production of HTSC tapes.…”

Section: Introductionmentioning

confidence: 99%

Ink-jet printing of YBa₂Cu₃O₇superconducting coatings and patterns from aqueous solutions

et al. 2012

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In this paper, we combine the use of Drop-on-Demand (DOD) ink-jet printing with completely water-based inks as a novel approach to the CSD process for coated conductors. This method holds the promise of improved scalability due to lower ink losses, continuous processing and a drastically increased precursor lifetime due to the prevention of solvent evaporation and dust incorporation. Moreover, ink-jet printing has the potential to switch quite easily from continuous coatings to a multi-filamentary pattern, which is particularly important for alternating current (AC) or field applications of coated conductors. The fluid properties, often expressed with dimensionless constants, like the Reynolds and Weber numbers, for printable liquids were determined. For proof-of-concept, single crystals of SrTiO 3 with a low mismatch towards YBCO, were used as substrates.

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“…5(c)). The needle-like grains were a-axis-oriented YBCO grains while the outgrowth particles were Cu-rich phase [18][19][20][21]. The needle-like grains and outgrowth particles grew along boundaries of c-axisoriented grains.…”

Section: Resultsmentioning

confidence: 99%

“…5 shows typical surface and cross-sectional FESEM images and corresponding in-plane epitaxial growth relationship for the YBCO film prepared at 893-942 K), the a-axis-oriented YBCO film exhibited fine crystal grains about 100 nm in size (marked by A in Fig. 5(a)), with some Cu-rich particles [18][19][20][21] distributing in surface (marked by B in Fig. 5(a)).…”

Section: Resultsmentioning

confidence: 99%

Influence of laser power on orientation, microstructure and electrical performance of YBa2Cu3O7−x film prepared on (001) SrTiO3 single crystal substrate by spray atomizing and coprecipitating laser chemical vapor deposition

Zhao

Wang

Huang

et al. 2015

Ceramics International

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Fabrication of Coated Conductors by Multiple-Stage CVD

Cited by 36 publications

References 13 publications

Rapid Formation of 200 m-long YBCO Coated Conductor by Multi-Stage CVD

Rapid Formation of 200 m-long YBCO Coated Conductor by Multi-Stage CVD

Ink-jet printing of YBa₂Cu₃O₇superconducting coatings and patterns from aqueous solutions

Influence of laser power on orientation, microstructure and electrical performance of YBa2Cu3O7−x film prepared on (001) SrTiO3 single crystal substrate by spray atomizing and coprecipitating laser chemical vapor deposition

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Fabrication of Coated Conductors by Multiple-Stage CVD

Cited by 36 publications

References 13 publications

Rapid Formation of 200 m-long YBCO Coated Conductor by Multi-Stage CVD

Rapid Formation of 200 m-long YBCO Coated Conductor by Multi-Stage CVD

Ink-jet printing of YBa2Cu3O7superconducting coatings and patterns from aqueous solutions

Influence of laser power on orientation, microstructure and electrical performance of YBa2Cu3O7−x film prepared on (001) SrTiO3 single crystal substrate by spray atomizing and coprecipitating laser chemical vapor deposition

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Product

Resources

About

Ink-jet printing of YBa₂Cu₃O₇superconducting coatings and patterns from aqueous solutions