The role of sol gel processing in the development of high-temperature superconductors for AC applications

Glowacki, B.A.; Mosiadz, M.

doi:10.1007/s10971-009-1980-8

Cited by 9 publications

(3 citation statements)

References 42 publications

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“…lithography), resulting in additional waste and expense. The direct printing of multi-filamentary structures is a potential route towards developing low AC loss coated conductors [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Chemical solution deposition using ink-jet printing for YBCO coated conductors

Driessche

Feys

Hopkins

et al. 2012

Supercond. Sci. Technol.

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This paper reports the successful application of ink-jet printing to the deposition of both continuous coatings and multi-filamentary structures of YBCO. Stable inks have been prepared using both the established TFA-MOD route and novel fluorine-free precursors with appropriate rheological properties for ink-jet printing. Continuous and well textured coatings with lengths exceeding 100 m and a thickness of 0.5 µm have been deposited by electromagnetic ink-jet printing from TFA precursors on LZO-buffered Ni–W substrates and samples have achieved a Jc around 1.5 MA cm−2 (self-field, 77 K). On single crystal substrates, continuous coatings and multi-filamentary structures have been deposited using piezoelectric ink-jet printing both from TFA- and water-based precursors, achieving Jc values up to 3 MA cm−2.

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Section: Introductionmentioning

confidence: 99%

Chemical solution deposition using ink-jet printing for YBCO coated conductors

Driessche

Feys

Hopkins

et al. 2012

Supercond. Sci. Technol.

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“…Among all the CSD routes that can be potentially used for fabricating YBCO thin films, metal-organic deposition using trifluoroacetates as precursors (TFA-MOD) nowadays is undoubtedly the most extensively studied one [2][3][4]. However, the hazardous HF gas evolving as a byproduct makes the decomposition process of the TFA-MOD technique very sluggish and not environmentally friendly [5]. Therefore, Fluorine-free MOD (FF-MOD) techniques have been attracting increasing attention in recent years [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effect of BaZrO3/Ag hybrid doping to the microstructure and performance of fluorine-free MOD method derived YBa2Cu3O7−x superconducting thin films

Tang

Zhao

et al. 2014

J Mater Sci: Mater Electron

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It is known that BaZrO 3 and Ag can improve the magnetic and transport performance of YBCO thin film through totally disparate ways. BaZrO 3 plays the role of flux pinning centers and Ag improves the transparency of the YBCO grain boundaries. However, similar research is rare on the fluorine-free derived YBCO films. In this research, BaZrO 3 -doped, Ag-doped and BaZrO 3 /Ag hybrid-doped YBCO films were synthesized through a fluorine-free metal-organic deposition method. BaZrO 3 was found to deteriorate the microstructure and performance of YBCO, while Ag-doping was found to enhance the crystallization of YBCO and resulted in a high Jc of 3.87 MA/cm 2 in self-field at 77 K. However, the microstructure and performance of the BaZrO 3 /Ag hybrid-doped YBCO film showed that the positive impact of Ag-doping was totally overwhelmed by that of BaZrO 3 .

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“…Recently, much attention has been paid to the low-cost deposition of high performance YBa 2 Cu 3 O 7-d (YBCO) superconducting films or coated conductors due to its great potential in future power applications [1]. The sol-gel method or metal-organic deposition (MOD) using trifluoroacetates (TFA) has been proved to be an effective process for fabrication of long-length YBCO coated conductors [2].…”

Section: Introductionmentioning

confidence: 99%

High-efficiency preparation of high-quality YBCO superconducting films using an ultralow-fluorine sol–gel method

Chen

Yin

et al. 2014

J Sol-Gel Sci Technol

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Superconducting YBa 2 Cu 3 O 7-x (YBCO) films were prepared using an ultralow-fluorine sol with F/Ba = 2, which was synthesized using fluorine-contained barium trifluoroacetate (Ba-TFA), and fluorine-free yttium, barium, and copper salts. The mole ratio of F/Ba = 2 was realized in the sol by controlling the content of Ba-TFA. During the pyrolysis process, the fluorine-free and fluorine-contained Ba-salts were found to be completely converted to BaF 2 phase, and almost no corrosive fluorinated gases (such as HF gas) were released out of the film, resulting in the film with smooth surface even under a high heating rate of 10-15°C/min. Single-coated YBCO film (*280 nm) with critical current density (J c ) of 5 MA/cm 2 (77 K, 0 T), and double-coated film (*550 nm) with J c over 3.5 MA/cm 2 (77 K, 0 T) were obtained on LaAlO 3 single crystal substrates. Compared with YBCO films deposited from solutions with higher fluorine content, the ultralow-fluorine solgel deposited YBCO films showed comparable superconductivity, but improved surface quality and production rate.

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The role of sol gel processing in the development of high-temperature superconductors for AC applications

Cited by 9 publications

References 42 publications

Chemical solution deposition using ink-jet printing for YBCO coated conductors

Chemical solution deposition using ink-jet printing for YBCO coated conductors

Effect of BaZrO3/Ag hybrid doping to the microstructure and performance of fluorine-free MOD method derived YBa2Cu3O7−x superconducting thin films

High-efficiency preparation of high-quality YBCO superconducting films using an ultralow-fluorine sol–gel method

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