Present status and strategy of reel-to-reel TFA-MOD process for coated conductors

Izumi, Teruo; Yoshizumi, M.; Miura, Masashi; Nakaoka, K.; Ichikawa, Yo; Sutoh, Y.; Miyata, S.; Fukushima, Hiroyuki; Yamada, Yutaka; Shiohara, Yuh

doi:10.1016/j.physc.2009.05.021

Cited by 24 publications

(23 citation statements)

References 6 publications

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“…This is proved, in part, by our studies in the case of Solution 2 were TEA is the only ligand present. We have obtained after slow evaporation of the solvent in a controlled atmosphere, blue crystals which were identified by X-Ray analysis as a copper trimmer: [Cu 3 (CH 3 COO) 4 The structure corresponds to a trinuclear complex of Copper atoms coordinated with TEA, acetate and TFA groups. No Barium or Yttrium atoms were detected in the crystal structure.…”

Section: Use Of Chelating Ligandsmentioning

confidence: 99%

“…In particular, metal-organic decomposition has been established as the versatile methodology to grow low cost, scalable, high performance epitaxial YBa 2 Cu 3 O 7 films for coated conductors. [1][2] The trifluoroacetate approach (TFA-MOD) has been the process mainly used for the preparation of YBCO layers [3] [4]. This barium fluoride process, although currently used for industrial companies in the development of longlength biaxially textured coated conductors is still deeply studied, especially to better understand the underlying decomposition and growth mechanisms and be able to further improve growth rates, thickness, throughputs and performance [5].…”

Section: Introductionmentioning

confidence: 99%

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Solution design for low-fluorine trifluoroacetate route to YBa₂Cu₃O₇films

Palmer

Pop

Eloussifi

et al. 2015

Supercond. Sci. Technol.

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In the context of CSD-MOD growth of coated conductors for low cost and scalable production of YBCO coated conductors, new solutions are proposed in accordance with the new requirements concerning environmental safety and product performance. Looking at these objectives we will present here our work in the preparation of metallorganic precursor solutions with reduced fluorine content, which fulfill the requirements of superconducting YBCO epitaxial layers, leading to high superconducting performance. Solutions with low fluorine precursors with different solvents and amounts of additives have been stabilized and their rheology modified for substrate wettability. Thermal decomposition analysis and infrared spectroscopy performed directly in films, have revealed the different decomposition steps and NMR analysis could unveil the chemical reactions taking place in the solution. Upon optimization of the growth process parameters, T c and J c (77K) of 90 K and 3-4 MA/cm 2 are obtained.

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Section: Use Of Chelating Ligandsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Solution design for low-fluorine trifluoroacetate route to YBa₂Cu₃O₇films

Palmer

Pop

Eloussifi

et al. 2015

Supercond. Sci. Technol.

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“…Since the discovery of a high temperature superconductor [1][2][3], lots of effort has been made to realize the HTS applications [4][5][6][7][8][9][10][11][12][13][14][15]. Among the applications, those using the HTS tape are expected as the promising ones, since the tapes could give a flexible shape for variable performances corresponding to the applications.…”

Section: Introductionmentioning

confidence: 99%

“…Although the development of the BSCCO tapes was preceded [11,12], a large-scaled development of CCs was started in FY1999 as the national project in Japan with expectation of the high potential of REBCO material [5,8,10]. Through the development of CCs of ten years, a length (L) and a critical current (I c ) had been drastically improved and the reasonable long tapes with high performance typically such as 200m-200 A/cm-width could be prepared [5,9,10]. This led to the start of a new national project of the M-PACC project [4,6].…”

Section: Introductionmentioning

confidence: 99%

Progress in R＆D of coated conductor in M-PACC project

Izumi¹,

Ibi²,

Nakaoka³

et al. 2014

Progress in Superconductivity and Cryogenics

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The five-year national project in Japan for R&D of coated conductors and applications, named as the Materials and Power Applications of Coated Conductors (M-PACC) project, was finished at the end of FY2013. The project consists of four sub-themes as cable, transformer, SMES and coated conductors. In the theme of coated conductors, the fabrication process had been developed to satisfy the requirements from the applications such as in-field I c performance, low AC loss in the long tapes etc. Through the project, the remarkable progress was achieved as follows; a high in-field minimum I c value over 54A/cm-width under 3T at 77K was realized in a 200m long EuBCO tape with artificial pinning centers of BaHfO 3 by the pulsed laser deposition (PLD) technique on the IBAD template. On the other hand, the AC loss reduction was confirmed in the tapes fabricated by both PLD and the metal organic deposition (MOD) techniques by scribing 100m tapes into 10-filamments. Additionally, the mechanism of the delamination phenomenon was systematically investigated and the strength was improved by eliminating the origins of the weak points in the films. Through the development, all targeted goals were accomplished and the several results were appreciated as a world champion data.

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“…In this respect, physical deposition processes, such as sputtering, Pulsed Laser Deposition (PLD) or electron beam evaporation require a high-vacuum while chemical processes, in particular Chemical Solution Deposition (CSD or MOD, metal organic decomposition), work under normal pressure [22]. Metal Organic Chemical Vapour Deposition (MOCVD) occupies an intermediate position which only requires a moderate vacuum [23].…”

Section: First and Second Generation Hts Tapesmentioning

confidence: 99%

Energy and superconductors – applications of high-temperature-superconductors

Bäcker¹

2011

Zeitschrift Für Kristallographie

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Abstract. More than 20 years after the discovery of hightemperature-superconductors (HTS) first applications in the energy sector are now becoming commercially attractive. Whereas still high end applications of low-temperaturesuperconductors (LTS) like NMR or MRI systems are the major drivers for industrial production, HTS based systems promise broader use in energy technology over the next few years. Due to their superior performance HTS materials enable more compact and lighter electric devices as well as an unbeatable improvement in energy efficiency. Moreover new devices like fault current limiters (FCL) are under development and field tests exhibit so far unknown properties for future electric grid design. Prototypes and first commercial systems like cables, generators, motors, FCL were successfully commissioned in the last few years. Based on these test results HTS systems will contribute significantly to the future key challenges in energy technology by reducing CO 2 -emmission due to their outstanding efficiency and to the security of energy supply.

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Present status and strategy of reel-to-reel TFA-MOD process for coated conductors

Cited by 24 publications

References 6 publications

Solution design for low-fluorine trifluoroacetate route to YBa₂Cu₃O₇films

Solution design for low-fluorine trifluoroacetate route to YBa₂Cu₃O₇films

Progress in R＆D of coated conductor in M-PACC project

Energy and superconductors – applications of high-temperature-superconductors

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Present status and strategy of reel-to-reel TFA-MOD process for coated conductors

Cited by 24 publications

References 6 publications

Solution design for low-fluorine trifluoroacetate route to YBa2Cu3O7films

Solution design for low-fluorine trifluoroacetate route to YBa2Cu3O7films

Progress in R＆D of coated conductor in M-PACC project

Energy and superconductors – applications of high-temperature-superconductors

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Product

Resources

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Solution design for low-fluorine trifluoroacetate route to YBa₂Cu₃O₇films

Solution design for low-fluorine trifluoroacetate route to YBa₂Cu₃O₇films