Enhanced superconducting properties in infiltration processed Y–Ba–Cu–O single-grain superconductor with nano-sized pinning centers

Li, Guozheng; Wang, Miao; Yang, Wan‐Min

doi:10.1016/j.jallcom.2015.07.117

Cited by 9 publications

(2 citation statements)

References 39 publications

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“…The J c is determined by factors such as material type, temperature, and flux pinning center * Author to whom any correspondence should be addressed. [10][11][12]. Among all, the addition of effective flux pinning centers to improve sample performance has always been a focus and hot topic of research.…”

Section: Introductionmentioning

confidence: 99%

Enhanced performance of GdBCO bulk superconductors by doping a new kind of YGdBa₄CuNbO _y nanoparticles

Cui,

Yang

2024

Supercond. Sci. Technol.

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In this work, a new kind of YGdBa4CuNbOy (YGdNb-11411) nano-particles was designed and sintered using a solid-state reaction method, whereas their impact on the performance of GdBCO bulks was investigated for the first time. From the acquired XRD data and SEM imaging results, it was proved that the YGdNb-11411 particles were of excellent chemical stability and did not react with other phases during the crystal growth process. The YGdNb-11411 particles ranged from 80 to 130 nm and they were uniformly distributed in the well-textured GdBCO bulk superconductors. The maximum critical current density (Jc-max) of the samples was enhanced from 3.48 × 104 A/cm2 to 8.63 × 104 A/cm2 (77 K) in the self-field as the doping amount increased from 0wt% to 7wt%. In addition, the GdBCO sample with YGdNb-11411 particles also showed an enhanced flux pinning force density and relatively high Jc around the magnetic flux density range of 1 T - 2 T (77 K). These results clearly indicated that the YGdNb-11411 particles could effectively enhance the properties of the GdBCO bulk superconductors.

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Section: Introductionmentioning

confidence: 99%

Enhanced performance of GdBCO bulk superconductors by doping a new kind of YGdBa₄CuNbO _y nanoparticles

Cui,

Yang

2024

Supercond. Sci. Technol.

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“…In the subsequent work, a new solid source with a composition of RE 2 O 3 + xBaCuO 2 was proposed to replace the RE-211 solid phase, and single-grain, high-quality SmBCO [9], GdBCO [10] and YBCO [11] bulks or rings have been successfully fabricated using this 'RE + 011' method. If the RE 2 O 3 nanopowder is employed, a large number of RE-211 inclusions will be in situ formed and composited in the REBa 2 Cu 3 O 7-δ (RE-123) matrix, which improves the performance further [12,13]. After this processing, only one type of precursor powder (i.e.…”

Section: Introductionmentioning

confidence: 99%

BiFeO₃ nanoparticle doping effect on the growth and properties of Y–Ba–Cu–O superconductors

Chen

Wang

2020

Supercond. Sci. Technol.

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The doping effect of BiFeO3 (BFO) nanoparticles on the growth and properties of Y–Ba–Cu–O (YBCO) superconductors by the powder melt and infiltration growth technique is investigated. The results indicate that nano-BFO doping reduces the growth rate of the Y-123 crystal and finally leads to smaller grain size in the YBCO bulk. Superconducting property measurements prove that improved levitation force and trapped field properties are observed in the 0.2 wt% BFO-doped YBCO sample. Magnetization measurement shows that the YBCO samples exhibit decreased T c values with the increased BFO amount from 0.1 wt%–0.3 wt%, but the transition width ΔT c shows no evident change. The sample with 0.2 wt% BFO addition presents the largest zero-field J c value and also the highest secondary peak value, which accounts for the superior performance of the sample. The electron probe micro analysis results combined with the XRD analysis prove the decomposition of the BFO and formation of the YBi-2411 in the final bulk, while Fe element exists in the form of Fe/Cu substitutions. Thus, the simultaneous introduction and cooperation of the two types of flux pinning centers (i.e. non-superconducting inclusions and element substitutions) can be realized through the addition of nano-BFO.

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Superconducting Properties of Welded Three Top‐Seeded YBa₂Cu₃O_7−x Produced with NdBCO/YBCO/MgO Thin‐Film Seed

Batur,

Duman,

Çakir

et al. 2024

Physica Status Solidi (b)

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This study investigates hollow single‐crystal top‐seeded melt growth (TSMG) YBa2Cu3O7−x (YBCO or Y123) samples welded with Ag‐added TSMG YBCO solder materials produced using NdBCO/YBCO/MgO thin‐film seeds. Three main samples and one solder material are produced by the TSMG method. In order to increase the dimensions of the bulk YBCO superconductor, two slices of the solder material and the main samples are stacked on top of each other with the c‐axis parallel and welded at 1030 °C. X‐ray diffraction patterns, polarized optical photographs, and SEM micrographs are taken to determine the structural properties of the samples. A preferential orientation in the c‐axis is observed with a good connection. Low‐temperature resistance and magnetization measurements are made for the specimens taken from the welding region. A sharp superconducting transition occurs at 0 T around 93 K for welding regions of W‐ab and W‐bc specimens. The critical current densities (Jc) are high as in the main samples. At the same time, the Jc values at 77 K and 0 T are found as 1.54 × 104, 1.98 × 104, 2.21 × 104, 2.31 × 104, and 2.36 × 104 A cm−2 for the W‐a, W‐ab, W‐b, W‐bc, and W‐c specimens, respectively. The single‐grain feature is not impaired; thus, the absence of additional grain boundaries facilitates the current passage.

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Enhanced superconducting properties in infiltration processed Y–Ba–Cu–O single-grain superconductor with nano-sized pinning centers

Cited by 9 publications

References 39 publications

Enhanced performance of GdBCO bulk superconductors by doping a new kind of YGdBa₄CuNbO _y nanoparticles

Enhanced performance of GdBCO bulk superconductors by doping a new kind of YGdBa₄CuNbO _y nanoparticles

BiFeO₃ nanoparticle doping effect on the growth and properties of Y–Ba–Cu–O superconductors

Superconducting Properties of Welded Three Top‐Seeded YBa₂Cu₃O_7−x Produced with NdBCO/YBCO/MgO Thin‐Film Seed

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Enhanced superconducting properties in infiltration processed Y–Ba–Cu–O single-grain superconductor with nano-sized pinning centers

Cited by 9 publications

References 39 publications

Enhanced performance of GdBCO bulk superconductors by doping a new kind of YGdBa4CuNbO y nanoparticles

Enhanced performance of GdBCO bulk superconductors by doping a new kind of YGdBa4CuNbO y nanoparticles

BiFeO3 nanoparticle doping effect on the growth and properties of Y–Ba–Cu–O superconductors

Superconducting Properties of Welded Three Top‐Seeded YBa2Cu3O7−x Produced with NdBCO/YBCO/MgO Thin‐Film Seed

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Enhanced performance of GdBCO bulk superconductors by doping a new kind of YGdBa₄CuNbO _y nanoparticles

Enhanced performance of GdBCO bulk superconductors by doping a new kind of YGdBa₄CuNbO _y nanoparticles

BiFeO₃ nanoparticle doping effect on the growth and properties of Y–Ba–Cu–O superconductors

Superconducting Properties of Welded Three Top‐Seeded YBa₂Cu₃O_7−x Produced with NdBCO/YBCO/MgO Thin‐Film Seed