Effects of tin-compounds addition on Jc and microstructure for YBCO films

Teranishi, Ryo; Miyanaga, Y.; Yamada, Kazutoyo; Môri, N.; Mukaida, Masashi; Miura, Masashi; Yoshizumi, M.; Izumi, Teruo; Namba, M.; Awaji, Satoshi; Watanabe, Kazuo

doi:10.1016/j.physc.2010.05.085

Cited by 11 publications

(5 citation statements)

References 14 publications

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“…The relationship between material defects and J c is complex [1]. Many researcher consider that the additions of oxides experiments for improving the current properties of YBCO film heavily depended on the size of the precipitates, where the model precipitate size is in range ∼10-30 nm [6][7][8][9][19][20][21][22][23][24][25][26][27][28][29][30][31]. And some precipitates size is even larger than 100 nm.…”

Section: Resultsmentioning

confidence: 99%

“…The enhanced pinning observed for all magnetic-field orientations results from a high density of quasi-isotropic defects in the YBCO matrix strongly caused by non-coherent BZO nanodots. This simple and cost-effective method to increase J c (H) was followed by many research groups, using additions of both BaZrO 3 [21,22] and other compounds [23][24][25][26][27]. These studies suggest that pinning centers introduced by metal organic deposition techniques show enhanced critical current density in all magnetic fields.…”

Section: Introductionmentioning

confidence: 99%

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Strong enhancement flux pinning in MOD-YBa 2 Cu 3 O 7−x films with self-assembled BaTiO 3 nanocolumns

Ding¹,

Gu²,

Zhang³

et al. 2014

Applied Surface Science

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Strong enhancement flux pinning in MOD-YBa 2 Cu 3 O 7−x films with self-assembled BaTiO 3 nanocolumns

Ding¹,

Gu²,

Zhang³

et al. 2014

Applied Surface Science

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“…Sn and SnO 2 are frequently introduced into Y-123 thin films fabricated by metal organic deposition process. These materials form Sn-based nanomaterials in the Y-123 matrix that can act as effective pinning centres [17,18,19]. Uniform distributed Sn-based reacted phase was also observed when SnO 2 was added into melt texture grown bulk Y-123 [20].…”

Section: Introductionmentioning

confidence: 99%

Structural and Superconducting Properties of Thermal Treatment-Synthesised Bulk YBa2Cu3O7−δ Superconductor: Effect of Addition of SnO2 Nanoparticles

et al. 2018

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YBa2Cu3O7−δ (Y-123) bulk superconductors with the addition of (0.0, 0.2, 0.4, 0.6, 0.8, and 1.0 wt.%) SnO2 nanoparticles were synthesised via a thermal treatment method. The influence of SnO2 addition on the superconducting properties by means of critical temperature, Tc, AC susceptibility, phase formation and microstructures, including its elemental composition analysis, were studied. Sharp superconducting transition, ∆Tc, and diamagnetic transition were obtained for all SnO2-added samples. It was observed that sample x = 0.4 with a Y-123 phase percentage of 95.8% gives the highest Tc, smallest ∆Tc, and the sharpest diamagnetic transition in the normalised susceptibility curves. The microstructure also showed an excess of Sn precipitates on the sample’s surface at x = 0.8 and above. As such, the best superconducting properties were observed at x = 0.4 SnO2 addition inside the Y-123 host sample.

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“…On the other hand, many oxides, including RE 2 O 3 (RE: Y, Dy, and Ho) [19][20][21], perovskite BZO [22][23][24][25][26][27][28][29][30], BSO [31][32][33][34][35], BaHfO 3 [36], cubic-double-perovskite Ba 2 YTaO 6 [37] and YBa 2 SnO 5.5 [38], have also been incorporated into the YBCO and REBCO (RE: Sm, and Gd) matrix by the MOD process. Unlike nano-structured columnar defects in PLD-processed YBCO or REBCO films except RE 2 O 3 , all the above oxides formed point-like nanoparticles in MOD-processed YBCO films.…”

Section: Introductionmentioning

confidence: 99%

A comparative study on the flux pinning properties of Zr-doped YBCO film with those of Sn-doped one prepared by metal-organic deposition

Choi¹,

Shin²,

Joo³

et al. 2013

Progress in Superconductivity and Cryogenics

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We investigated the flux pinning properties of both 10 mol% Zr-and Sn-doped YBa 2 Cu 3 O 7-δ (YBCO) films with the same thickness of ~350 nm for a comparative purpose. The films were prepared on the SrTiO 3 (STO) single crystal substrate by the metal-organic deposition (MOD) process. Compared with Sn-doped YBCO film, Zr-doped one exhibited a significant enhancement in the critical current density (J c) and pinning force density (F p). The anisotropic J c,min /J c,max ratio in the field-angle dependence of J c at 77 K for 1 T was also improved from 0.23 for Sn-doped YBCO to 0.39 for Zr-doped YBCO. Thus, the highest magnetic J c values of 9.0 and 2.9 MA/cm 2 with the maximum F p (F p,max) values of 19 and 5 GN/m 3 at 65 and 77 K for H // c, respectively, could be achieved from Zr-doped YBCO film. The stronger pinning effect in Zr-doped YBCO film is attributable to smaller BaZrO 3 (BZO) nanoparticles (the average size ≈ 28.4 nm) than YBa 2 SnO 5.5 (YBSO) nanoparticles (the average size ≈ 45.0 nm) incorporated in Sn-doped YBCO film since smaller nanoparticles can generate more defects acting as effective flux pinning sites due to larger incoherent interfacial area for the same doping concentration.

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Effects of tin-compounds addition on Jc and microstructure for YBCO films

Cited by 11 publications

References 14 publications

Strong enhancement flux pinning in MOD-YBa 2 Cu 3 O 7−x films with self-assembled BaTiO 3 nanocolumns

Strong enhancement flux pinning in MOD-YBa 2 Cu 3 O 7−x films with self-assembled BaTiO 3 nanocolumns

Structural and Superconducting Properties of Thermal Treatment-Synthesised Bulk YBa2Cu3O7−δ Superconductor: Effect of Addition of SnO2 Nanoparticles

A comparative study on the flux pinning properties of Zr-doped YBCO film with those of Sn-doped one prepared by metal-organic deposition

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