High-Jc YBa2Cu3O7−x-Ag superconducting thin films synthesized through a fluorine-free MOD method

Tang, Xiao; Zhao, Yichun; Wu, Wei; Andersen, N.H.; Grivel, Jean‐Claude

doi:10.1016/j.jeurceramsoc.2014.12.001

Cited by 30 publications

(16 citation statements)

References 35 publications

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“…Because of the blocking effect of the impurities and grains with secondary orientations, no superconducting transition is detected above 50 K for the YBCO-Ag film on the CLO/YSZ substrate. In contrast, the similar growth conditions are able to yield high-performance YBCO-Ag films with J c values (77 K, self field) higher than 3 MA/cm 2 on LAO substrates [3]. Nucleation and gowth study on the partially reacted sample quenched form different temperatures further suggests that FF-YBCO-Ag grains nulceate most likely later than the interface reactions when using the CSD-CLO as cap layer.…”

Section: Methodsmentioning

confidence: 96%

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Influence of interface reactions on the YBCO films grown by fluorine-free solution route

Zhao

Tang

et al. 2015

2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)

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Fabrication of full-stacked coated conductors by allchemical-solution routes exhibit a great potential in view of further reducing the cost and increasing the throughput for industrialization.Growth of YBa 2 Cu 3 O 7-x (YBCO) superconducting films by fluorine-free metal organic deposition routes (FF-MOD) which are environmental friendly has attracted more attentions recently. In this work, comparison study was performed on the YBCO-Ag superconducting thin films deposited on two types of single crystal substrates, LaAlO 3 and Ce 0.9 La 0.9 O 2-y /YSZ. The structural characterization and superconducting properties studies reveal that the interface reactions between the YBCO-Ag film and the CLO cap layer play an essential role on the nucleation and growth of YBCO-Ag films from the FF solution. Weak texture caused by serious interface reactions at high growth temperature is the main explanations for the poor superconducting performance when using CLO/YSZ as substrate. Further investigation of compatibility of the buffer layer for FF-derived YBCO films is needed.

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Section: Methodsmentioning

confidence: 96%

“…The CLO films and the YBCO-Ag films deposited by chemical solution routes were published previously [1,3]. Briefly, the CLO films were prepared by using a propionatesbased metal-organic solution, while the YBCO-Ag films were prepared by a novel sliver-assist fluorine-free MOD solution route.…”

Section: Methodsmentioning

confidence: 99%

Influence of interface reactions on the YBCO films grown by fluorine-free solution route

Zhao

Tang

et al. 2015

2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)

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“…The deposition of the CLO films and the YBCO-Ag films by chemical solution routes were published previously [2,6]. The CLO films were prepared using a propionates-based metal-organic solution, while the YBCO-Ag films were prepared by using the SAFF-MOD precursor.…”

Section: Methodsmentioning

confidence: 99%

“…A YBCO layer prepared from a low-fluorine MOD (LF-MOD) route was grown on a CLO buffered yttrium stabilized ZrO 2 (YSZ) template and exhibited high performance (>3 MA/cm 2 , at 77 K, sf) comparable with that of films grown on single crystalline LaAlO 3 (LAO) by the same route [3]. Parallelly, a series of solution precursors with various amount of fluorine have been developed in our group [4][5][6]. Almost all of the precursors enable obatining high performance YBCO films on LAO single crystals.…”

Section: Introductionmentioning

confidence: 99%

“…normally a higher growth temperature related to the melting process is critical in the FF-MOD routes. Recently, a novel silver assisted fluorine-free metal organic deposition (SAFF-MOD) route has been proposed to reduce the growth temperature and further enhance the J c values [6]. With help of silver addition the incongruent melting temperature of YBCO is lowered, and a smooth and dense morphology is observed on the YBCO film surface at a growth temperature as low as 760 o C, leading to improved intergranular conductivity.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Substrate-Film Reactions on YBCO Grown by Fluorine-Free MOD Route

Zhao

Tang

et al. 2017

IEEE Trans. Appl. Supercond.

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Recently, fluorine-free metal organic deposition routes (FF-MOD) for growth of YBCO superconducting films have attracted increased attentions. In this work, a comparison study was performed on the YBCO-Ag superconducting thin films deposited on two types substrates, LaAlO 3 and CSD-Ce 0.9 La 0.1 O 2-y (CLO)/YSZ respectively. Although conventional TFA-MOD derived YBCO films exhibit high performance on both substrates, the results vary when using the FF-MOD precursor. SEM and XRD results reveal that c-axis and a/b axis orientations co-exist in the YBCO-Ag films grown on the CSD-CLO/YSZ substrate deposited by the FF-MOD route, while the BaCeO 3 by-product is a dominating phase in the fully reacted film. Based on the structural analysis of the partially converted films, we found that interfacial reactions between the film and the CLO cap layer play an essential role on the epitaxial growth of YBCO-Ag films from the FF-MOD solution. Because of the different chemical reaction path compared to conventional TFA-MOD routes, it seems that the polycrystalline BaCeO 3 formation takes place prior to the YBCO-Ag epitaxial growth associated with the melting process, which results in structural deterioration at high growth temperatures and therefore no superconductivity. This study indicates the necessity of further reducing the nucleation temperature of YBCO films processed by FF-MOD routes.

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Investigation of superconducting and elastic parameters of YBCO/LSMO thick films

Sahoo

Behera

2019

J Mater Sci: Mater Electron

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High-Jc YBa2Cu3O7−x-Ag superconducting thin films synthesized through a fluorine-free MOD method

Cited by 30 publications

References 35 publications

Influence of interface reactions on the YBCO films grown by fluorine-free solution route

Influence of interface reactions on the YBCO films grown by fluorine-free solution route

Influence of Substrate-Film Reactions on YBCO Grown by Fluorine-Free MOD Route

Investigation of superconducting and elastic parameters of YBCO/LSMO thick films

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