Development of modified TFA-MOD approach for GdBa2Cu3Oy film growth

Jin, Lihua; Lu, Yafeng; Feng, Jianqing; Zhang, S.N.; Yu, Z.M.; Wang, Y.; Li, C.S.

doi:10.1016/j.matlet.2012.12.022

Cited by 9 publications

(2 citation statements)

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“…In general, most of this work followed the well-known TFA-MOD-route [27]. This route has already shown promising properties for GdBCO films [17,[28][29][30][31][32][33], but still the effort is not comparable to YBCO and so there is room for improvement, as we will demonstrate in this work.…”

Section: Introductionmentioning

confidence: 99%

Large critical current densities and pinning forces in CSD-grown superconducting GdBa₂Cu₃O_7−x-BaHfO₃nanocomposite films

Cayado

Erbe

Kauffmann-Weiss

et al. 2017

Supercond. Sci. Technol.

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GdBa 2 Cu 3 O 7 x -BaHfO 3 (GdBCO-BHO) nanocomposite (NC) films containing 12 mol% BHO nanoparticles were prepared by chemical solution deposition (CSD) following the TFA route on SrTiO 3 (STO) single crystals and buffered metallic tapes supplied by two different companies: Deutsche Nanoschicht GmbH and SuperOx. We optimized the preparation of our GdBCO-BHO solutions with acetylacetone making the film synthesis very robust and reproducible, and obtained 220 nm films with excellent superconducting properties. We show the structural, morphological and superconducting properties of the films after a careful optimization of the processing parameters (growth temperature, oxygen partial pressure and heating ramp). The films reach critical temperatures (T c ) of ∼94 K, self-field critical current densities (J c ) of >7 MA cm 2 and maximum pinning force densities (F p ) of ∼16 GN m 3 at 77 K on STO and T c of ∼94.5 K and J c > 1.5 MA cm 2 on buffered metallic tapes. The transport properties under applied magnetic fields are significantly improved with respect to the pristine GdBCO films. The GdBCO-BHO NC films on STO present epitaxial c-axis orientation with excellent out-of-plane and in-plane texture. The films are, in general, very dense with a low amount of pores and only superficial indentations. On the other hand, we present, for the first time, a systematic study of CSD-grown GdBCO-BHO NC films on buffered metallic tapes. We have used the optimized growth conditions for STO as a reference and identified some limitations on the film synthesis that should be overcome for further improvement of the films' superconducting properties.

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Section: Introductionmentioning

confidence: 99%

Large critical current densities and pinning forces in CSD-grown superconducting GdBa₂Cu₃O_7−x-BaHfO₃nanocomposite films

Cayado

Erbe

Kauffmann-Weiss

et al. 2017

Supercond. Sci. Technol.

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“…It is a scalable, versatile and low-cost technique that follows a chemical route for the growth of the films [18][19][20][21][22] and is thus suitable for the preparation of CCs. Very popular and thoroughly studied is the TFA-MOD route, which is a particular CSD technique leading to excellent superconducting properties in GdBCO films 12,[23][24][25][26][27][28][29][30][31] .…”

Section: Importance Of the Pyrolysis For Microstructure And Supercondmentioning

confidence: 99%

Importance of the pyrolysis for microstructure and superconducting properties of CSD-grown GdBa2Cu3O7−x-HfO2 nanocomposite films by the ex-situ approach

Cayado

Rijckaert

Bruneel

et al. 2020

Sci Rep

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For the first time, GdBa2Cu3O7−x nanocomposites were prepared by chemical solution deposition following the ex-situ approach. In particular, ~ 220 nm GdBa2Cu3O7−x-HfO2 (GdBCO-HfO2) nanocomposite films were fabricated starting from a colloidal solution of 5 mol% HfO2 nanoparticles. Hereby, one of the main challenges is to avoid the accumulation of the nanoparticles at the substrate interface during the pyrolysis, which would later prevent the epitaxial nucleation of the GdBCO grains. Therefore, the effect of pyrolysis processing parameters such as heating ramp and temperature on the homogeneity of the nanoparticle distribution has been investigated. By increasing the heating ramp to 300 °C/h and decreasing the final temperature to 300 °C, a more homogenous nanoparticle distribution was achieved. This translates into improved superconducting properties of the grown films reaching critical temperatures (Tc) of 94.5 K and self-field critical current densities ($${J}_{\mathrm{c}}^{\mathrm{sf}}$$ J c sf ) at 77 K of 2.1 MA/cm2 with respect to films pyrolyzed at higher temperatures or lower heating ramps.

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Enhanced flux pinning in YGdBCO film grown by sol–gel approach

Jin

et al. 2014

J Sol-Gel Sci Technol

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Development of modified TFA-MOD approach for GdBa2Cu3Oy film growth

Cited by 9 publications

References 10 publications

Large critical current densities and pinning forces in CSD-grown superconducting GdBa₂Cu₃O_7−x-BaHfO₃nanocomposite films

Large critical current densities and pinning forces in CSD-grown superconducting GdBa₂Cu₃O_7−x-BaHfO₃nanocomposite films

Importance of the pyrolysis for microstructure and superconducting properties of CSD-grown GdBa2Cu3O7−x-HfO2 nanocomposite films by the ex-situ approach

Enhanced flux pinning in YGdBCO film grown by sol–gel approach

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Development of modified TFA-MOD approach for GdBa2Cu3Oy film growth

Cited by 9 publications

References 10 publications

Large critical current densities and pinning forces in CSD-grown superconducting GdBa2Cu3O7−x-BaHfO3nanocomposite films

Large critical current densities and pinning forces in CSD-grown superconducting GdBa2Cu3O7−x-BaHfO3nanocomposite films

Importance of the pyrolysis for microstructure and superconducting properties of CSD-grown GdBa2Cu3O7−x-HfO2 nanocomposite films by the ex-situ approach

Enhanced flux pinning in YGdBCO film grown by sol–gel approach

Contact Info

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Resources

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Large critical current densities and pinning forces in CSD-grown superconducting GdBa₂Cu₃O_7−x-BaHfO₃nanocomposite films

Large critical current densities and pinning forces in CSD-grown superconducting GdBa₂Cu₃O_7−x-BaHfO₃nanocomposite films