Effect of fabrication conditions on crystalline of SmBCO films fabricated by TFA-MOD method

Mitani, Atsuo; Teranishi, Ryo; Yamada, Kazutoyo; Môri, N.; Mukaida, Masashi; Kiss, Takanobu; Inoue, Masayoshi; Shiohara, Yuh; Izumi, Teruo; Nakaoka, K.; Matsuda, Junko

doi:10.1016/j.physc.2008.05.066

Cited by 6 publications

(6 citation statements)

References 11 publications

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“…Moreover, the intensities of the reflections associated to (00l)-oriented grains decrease. This enhancement of a-axis grains with pO2 is common also in other REBCO compounds and was also observed previously in the particular case of SmBCO-TFA films [38]. At 20 and 50 ppm, the films show rather similar characteristics but with slightly lower intensities of the (00l) reflections at the lowest partial pressure of oxygen, Figure 2d).…”

Section: Smbco I 103 Smbco I 005 Smbcosupporting

confidence: 86%

“…The thermal profile of the pyrolysis had to be newly designed for the SmBCO-ELF films since no previous results were reported for this particular type of films and the temperature ramp towards the pyrolysis dwell temperature is one of the decisive parameters for good film growth [38,39]. Heating rates of 5, 10, 15, and 20 • C/min were tested for their influence on the surface morphology for both SmBCO-ELF and SmBCO-TFA films.…”

Section: Influence Of the Heating Rate During Pyrolysismentioning

confidence: 99%

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Rapid Pyrolysis of SmBa2Cu3O7-δ Films in CSD-MOD Using Extremely-Low-Fluorine Solutions

Cayado

Erbe

et al. 2020

Coatings

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SmBa2Cu3O7-δ (SmBCO) films have been prepared by chemical solution deposition starting from extremely-low-fluorine solutions (7% fluorine with respect to standard full trifluoroacetate solutions). Smooth and homogeneous SmBCO films could be achieved at heating rates of up to 20 °C/min during pyrolysis. The best films were achieved at a crystallization temperature of 810 °C and 50 ppm of oxygen partial pressure. At these conditions, the ~270 nm thick SmBCO films grow mostly c-axis-oriented with J c sf values at 77 K of ~2 MA/cm2 and critical temperatures Tc of up to 95.0 K. These results demonstrate that using extremely-low-fluorine solutions is very attractive since the production rate can be largely increased due to the solutions’ robustness during pyrolysis retaining a remarkable quality of the grown films. Nevertheless, further optimization of the growth process is needed to improve the superconducting properties of the films.

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Section: Smbco I 103 Smbco I 005 Smbcosupporting

confidence: 86%

Section: Influence Of the Heating Rate During Pyrolysismentioning

confidence: 99%

Rapid Pyrolysis of SmBa2Cu3O7-δ Films in CSD-MOD Using Extremely-Low-Fluorine Solutions

Cayado

Erbe

et al. 2020

Coatings

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“…5. The J c reduces with the firing temperature from 815 • C to 835 • C. The trend is similar to the one of TFA-YBCO reported by Jee et al and TFA-SmBCO reported by Mitani et al [11,12]. As the firing temperature increases, the J c reaches a maximum value (1.8 MA/cm 2 ) at 815 • C, and then decreases when the firing temperature further increases.…”

Section: Resultssupporting

confidence: 86%

Fabrication of GdBa2Cu3O7−x films by TFA-MOD process

Jin¹,

Lu²,

Yan³

et al. 2011

Journal of Alloys and Compounds

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“…The T c values, figure 2, vary between approximately 90.5 K for the pure YbBCO films and approximately 95 K for the pure SmBCO films. These values are similar to the ones reported in previous works for YbBCO [13][14][15][16][17][18] and SmBCO films [12,[34][35][36] prepared by different techniques and also resemble previously reported values for YbSmBCO bulk samples [33]. The influence of Yb content on T c is very remarkable.…”

Section: Superconducting Properties Of Yb 1−x Sm X Ba 2 Cu 3 O 7−δ Filmssupporting

confidence: 91%

“…J sf c at 77 K varies between approximately 1 MA cm −2 for pure YbBCO and approximately 2 MA cm −2 for pure SmBCO with the films with x = 0.5 and x = 0.9 in between. Although these values seem to be quite modest, they are among the largest published for YbBCO [13][14][15][16][17][18] and also SmBCO films [12,[34][35][36] grown by different techniques. However, at lower temperatures, the mixed films start to compete with the pure phases.…”

Section: Superconducting Properties Of Yb 1−x Sm X Ba 2 Cu 3 O 7−δ Filmsmentioning

confidence: 83%

RE BCO mixtures with large difference in rare-earth ion size: superconducting properties of chemical solution deposition-grown Yb _{1−
x} Sm _x Ba ₂ Cu ₃ O ₇₋ _δ films

Cayado

Erbe

et al. 2020

R. Soc. open sci.

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The main objective of this work was to study the superconducting properties of RE BCO films with a mixture of rare-earth ( RE ) ions with large difference in ion size, in particular Sm 3+ and Yb 3+ . These Yb 1− x Sm x Ba 2 Cu 3 O 7− δ films have been successfully prepared for the first time by chemical solution deposition following the extremely low-fluorine route, which allows reducing the fluorine content by 93% with respect to standard full trifluoroacetate solutions. On the one hand, critical temperature T c remains stable at approximately 90 K with Sm content up to x = 0.5 where T c starts to increase towards the values of pure SmBCO films of approximately 95 K. On the other hand, the critical current densities J c of the pure SmBCO films are the largest at 77 K, where the influence of a higher T c is very relevant, while at lower temperatures and low fields, the mixed films reach larger values. This demonstrates that mixing rare-earth elements RE in RE Ba 2 Cu 3 O 7− δ causes a change in the pinning properties of the films and reveals the importance of selecting adequate RE BCO compounds according to the temperature and magnetic field region of a desired application.

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Effect of fabrication conditions on crystalline of SmBCO films fabricated by TFA-MOD method

Cited by 6 publications

References 11 publications

Rapid Pyrolysis of SmBa2Cu3O7-δ Films in CSD-MOD Using Extremely-Low-Fluorine Solutions

Rapid Pyrolysis of SmBa2Cu3O7-δ Films in CSD-MOD Using Extremely-Low-Fluorine Solutions

Fabrication of GdBa2Cu3O7−x films by TFA-MOD process

RE BCO mixtures with large difference in rare-earth ion size: superconducting properties of chemical solution deposition-grown Yb _{1−
x} Sm _x Ba ₂ Cu ₃ O ₇₋ _δ films

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Effect of fabrication conditions on crystalline of SmBCO films fabricated by TFA-MOD method

Cited by 6 publications

References 11 publications

Rapid Pyrolysis of SmBa2Cu3O7-δ Films in CSD-MOD Using Extremely-Low-Fluorine Solutions

Rapid Pyrolysis of SmBa2Cu3O7-δ Films in CSD-MOD Using Extremely-Low-Fluorine Solutions

Fabrication of GdBa2Cu3O7−x films by TFA-MOD process

RE BCO mixtures with large difference in rare-earth ion size: superconducting properties of chemical solution deposition-grown Yb 1− x Sm x Ba 2 Cu 3 O 7− δ films

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Product

Resources

About

RE BCO mixtures with large difference in rare-earth ion size: superconducting properties of chemical solution deposition-grown Yb _{1−
x} Sm _x Ba ₂ Cu ₃ O ₇₋ _δ films