Nano-composite single grain YBa2Cu3O7-δ/Y2Ba4CuBiOybulk superconductors

Babu, N. Hari; Liu, Cheng; Iida, K.; Cardwell, D. A.

doi:10.1088/1742-6596/43/1/094

Cited by 11 publications

(6 citation statements)

References 11 publications

(9 reference statements)

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“…J C value is almost same at the low field for all the samples, however, J C is observed to decrease with various amounts of Gd2411 particle inclusions. The present result may elucidate the spatial variation of superconducting properties with inhomogeneous Gd211/Gd2411 distribution, which is consistent with the previous reports [8,[13][14][15][16][17][18]. The evidence for different superconductivity performance in the compositions with various Fe-containing Gd2411 particles will be further interpreted by the investigation in the future microstructure of the distribution of Fe-containing Gd2411 and Gd211 inclusions.…”

Section: Enhanced Superconducting Properties Of Bulks With Different supporting

confidence: 91%

Growth and properties of air-processed GdBa2Cu3O7−δ superconductors with fined Gd2BaCuO5 and Gd2Ba4CuFeOy additions

Zhang

Izumi

Kimura

et al. 2009

Physica C: Superconductivity

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Section: Enhanced Superconducting Properties Of Bulks With Different supporting

confidence: 91%

Growth and properties of air-processed GdBa2Cu3O7−δ superconductors with fined Gd2BaCuO5 and Gd2Ba4CuFeOy additions

Zhang

Izumi

Kimura

et al. 2009

Physica C: Superconductivity

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“…YBCO superconductors doped with NiO, , , and generally exhibit improved flux pinning and s [9]- [12]. All of these oxide-based dopants produce nano-scale inclusions from their parent oxide.…”

Section: Resultsmentioning

confidence: 99%

Improved Flux Pinning in Y–Ba–Cu–O Superconductors Containing Niobium Oxide

Yeoh

Pathak

Shi

et al. 2009

IEEE Trans. Appl. Supercond.

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The effect of the addition of niobium oxide (NbO 2 ) on the critical current density of large, single grain bulk YBCO superconductors fabricated by top seeded melt growth (TSMG) has been investigated. The high field critical current density, , of NbO 2 doped YBCO is improved significantly even though in the low field region is generally lower than in undoped samples. Under these conditions, when field is applied parallel to the -axisis enhanced by more than an order of magnitude at 4 T at 77 K to 2 10 3 A cm 2 for the NbO 2 containing sample.This enhancement in is accompanied by a large increase in irreversibility field, irr , from 4 T for the undoped sample to over 6 T. Enhanced flux pinning at high field is due to the formation of a nano-scale Nb-rich phase during high temperature sintering, melting and solidification of the bulk superconductor.Index Terms-Bulk YBCO, critical current density, melt textured superconductor, oxide particle doping.

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“…[2]. It is well known that the top-seeded melt texture growth (TSMTG) method is widely used to fabricate bulk superconductors with high critical current densities (J c ) at 77 K [3]. However, conventional melt processes based on the peritectic reaction have some frequent problems, such as existence of defect, the loss of liquid during peritectic decomposition, distortion, and shrinkage of the final samples.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Y2Ba4CuBiOy Nanoparticles with CeO2 Doping on the Levitation Force of Single Domain YBCO Bulk Superconductor by TSIG Process

Wang¹,

Yang²,

Wang³

et al. 2018

MSCE

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The top-seeded infiltration and growth process (TSIG) is very effective method for the preparation of YBa 2 Cu 3 O 7−x (YBCO) bulk superconductors. In order to improve the levitation force of the samples, a series of single domain YBCO bulk superconductors with different ratios of nanoscale Y 2 Ba 4 CuBiO y (YBi2411) inclusions in the solid phase pellet is successfully fabricated by the TSIG technique on the basis of previous research. In the present work, the results of YBCO bulk superconductors with YBi2411 and CeO 2 (1 wt%) codoping system indicate that, the optimum doping of YBi2411 is 2 wt%, the size of Y211 particles is reduced compared with the samples without CeO 2 doping; the largest levitation force is about 15 N obtained in the samples with optimum YBi2411, which is about two times higher than that of the sample without CeO 2 doping. The results are very helpful for the fabrication of high quality single domain YBCO bulk superconductors.

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Nano-composite single grain YBa₂Cu₃O_7-δ/Y₂Ba₄CuBiO_ybulk superconductors

Cited by 11 publications

References 11 publications

Growth and properties of air-processed GdBa2Cu3O7−δ superconductors with fined Gd2BaCuO5 and Gd2Ba4CuFeOy additions

Growth and properties of air-processed GdBa2Cu3O7−δ superconductors with fined Gd2BaCuO5 and Gd2Ba4CuFeOy additions

Improved Flux Pinning in Y–Ba–Cu–O Superconductors Containing Niobium Oxide

Comparison of Y<sub>2</sub>Ba<sub>4</sub>CuBiOy Nanoparticles with CeO<sub>2</sub> Doping on the Levitation Force of Single Domain YBCO Bulk Superconductor by TSIG Process

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Nano-composite single grain YBa2Cu3O7-δ/Y2Ba4CuBiOybulk superconductors

Cited by 11 publications

References 11 publications

Growth and properties of air-processed GdBa2Cu3O7−δ superconductors with fined Gd2BaCuO5 and Gd2Ba4CuFeOy additions

Growth and properties of air-processed GdBa2Cu3O7−δ superconductors with fined Gd2BaCuO5 and Gd2Ba4CuFeOy additions

Improved Flux Pinning in Y–Ba–Cu–O Superconductors Containing Niobium Oxide

Comparison of Y&lt;sub&gt;2&lt;/sub&gt;Ba&lt;sub&gt;4&lt;/sub&gt;CuBiOy Nanoparticles with CeO&lt;sub&gt;2&lt;/sub&gt; Doping on the Levitation Force of Single Domain YBCO Bulk Superconductor by TSIG Process

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Nano-composite single grain YBa₂Cu₃O_7-δ/Y₂Ba₄CuBiO_ybulk superconductors

Comparison of Y<sub>2</sub>Ba<sub>4</sub>CuBiOy Nanoparticles with CeO<sub>2</sub> Doping on the Levitation Force of Single Domain YBCO Bulk Superconductor by TSIG Process