YBa2Cu3O7‐δ superconductor bulks composited by Y2BaCuO5 nanoparticles derived from homogeneous nucleation catastrophe

Liu, Yan; Pan, Bin; Li, Zhi; Xiang, Hui; Qian, Jun; Du, Gehai; Huang, Simin; Yao, Xin; Izumi, Mitsuru; Wang, Ying

doi:10.1111/jace.14963

Cited by 14 publications

(6 citation statements)

References 24 publications

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“…The present trapped field values recorded in our present experiments are not spectacular, as the values are still much smaller than those obtained on YBCO or GdBCO bulk samples at 77 K. The current records are about 800 mT (SmBCO) and 1.1 T (GdBCO) when cooling the sample to 77 K in 1.3/1.6 T applied magnetic field using an electromagnet [32,33]. In case of samples magnetized by a permanent magnet, the TF fields of bulks range between 150 [34] and 420 mT [35], depending on the sample size and the chemical additions to create additional flux pinning sites. The differences in the TF values obtained are due to the differences in the magnetization process: An electromagnet produces a homogeneous field between the pole pieces, whereas a permanent magnet has an inhomogeneous field as shown in Figure 2.…”

Section: Resultsmentioning

confidence: 99%

Superconducting YBCO Foams as Trapped Field Magnets

et al. 2019

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Superconducting foams of YBa 2 Cu 3 O y (YBCO) are proposed as trapped field magnets or supermagnets. The foams with an open-porous structure are light-weight, mechanically strong and can be prepared in large sample sizes. The trapped field distributions were measured using a scanning Hall probe on various sides of an YBCO foam sample after field-cooling in a magnetic field of 0.5 T produced by a square Nd-Fe-B permanent magnet. The maximum trapped field (TF) measured is about 400 G (77 K) at the bottom of the sample. Several details of the TF distribution, the current flow and possible applicatons of such superconducting foam samples in space applications, e.g., as active elements in flux-pinning docking interfaces (FPDI) or as portable strong magnets to collect debris in space, are outlined.

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Section: Resultsmentioning

confidence: 99%

Superconducting YBCO Foams as Trapped Field Magnets

et al. 2019

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“…9 presents field trapping abilities of vertically connected seeded samples. The trapped-field profile detected from the T-patterned crystal highlights a mono-peak of 0.6424 T, which is obviously higher than the former best result of 0.636 T (Liu et al, 2017) from a same-sized crystal by refining Y211 particles during TSMG. Following the identical conception, a Z-type seeding pattern was also adopted.…”

Section: Vertically Connected Seeding and Tslg-originated Ybco Nuclea...mentioning

confidence: 58%

“…YBCO single-domain crystals were produced in air by a socalled cold-seeding TSMG method (Zhu et al, 2020a) utilizing both conventional precursor powder (CPP) and modified precursor powder [MPP (Liu et al, 2017) for potentially higher properties]. First, three starting materials YBa 2 Cu 3 O 7À (Y123), Y 2 BaCuO 5 (Y211) and Ba 2 Cu 3 O x (Y023) were obtained through solid-state reactions by mixing Y 2 O 3 (Y200), BaCO 3 and CuO powders in stoichiometric ratios.…”

Section: Experimental Methodsmentioning

confidence: 99%

Natural strategies for creating non-equilibrium morphology with self-repairing capability towards rapid growth of excellent YBa₂Cu₃O_7−δ crystals

Zhu¹,

Yang²,

Gu³

et al. 2023

Int Union Crystallogr J

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Self-repair, as a natural phenomenon, has been vastly observed and investigated in a variety of fields. With such an ability, living species self-heal their wounds to restore physiological functions while non-biological materials return to their original states, for example, thin surface layer growth occurs in the regeneration of incomplete KH2PO4 crystals. Here, two seeding strategies are developed for creating incomplete crystallographic shapes (i.e. right-angled concave corners) of YBa2Cu3O7−δ (YBCO) superconducting crystals with self-repairing capability in top-seeded melt growth. One involves in situ self-assembly seeding, by which the ability to self-repair promotes YBCO growth; the other is vertically connected seeding, by which self-repair triggers YBCO nucleation. Consequently, rapid surface crystallization originated at concave corners and swiftly generated initial growth morphology approaching equilibrium. Furthermore, these rapid-growth regions including the concave crystal or seed innately functioned as sizable effective seeding regions, enabling the enlargement of the c-oriented growth sector and the enhancement of properties for YBCO crystals. This work demonstrates experimentally that biaxial-in-plane-aligned crystals and precisely perpendicular-arranged seeds are important self-repairing activators for the rapid growth of YBCO crystals. This nature-inspired self-repairing work offers insights into the design of seeding architecture with non-equilibrium morphology for inducing sizable high-performance crystals in the YBCO family and other functional materials.

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“…Bulk single‐grain superconductors based on YBa 2 Cu 3 O 7‐δ (further Y123, YBCO or 123) compounds are highly attractive materials for practical applications, therefore they are intensively studied . One of the important problems affecting the application of these superconductors is the tendency to irreversible degradation due to exposure to ambient atmospheric conditions .…”

Section: Introductionmentioning

confidence: 99%

Corrosion of YBCO bulk superconductor in air

et al. 2018

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A corrosion process caused by reaction of surfaces of oxygenation cracks of YBCO bulk single-grain superconductor with air moisture was studied. X-ray photo-emission spectroscopy, done on air exposed (001) surfaces, confirmed oxygen bonds related to barium hydroxide. Thermal analyses and mass spectrometry of exposed samples has shown a release of water caused by decomposition of barium hydroxide hydrates during sample heating. The sample weight increase versus time was related to formation of barium hydroxide phases at the surfaces of oxygenation cracks. The morphological changes of these phases at heating were observed with scanning electron microscope.electron microscopy, mass spectrometry, microstructure, thermal analysis, X-ray photo-emission spectroscopy, YBCO superconductors 2 | EXPERIMENTAL YBCO bulk single-grain samples (Figure 1) were prepared by top-seed melt-growth (TSMG) process from the

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YBa₂Cu₃O_7‐δ superconductor bulks composited by Y₂BaCuO₅ nanoparticles derived from homogeneous nucleation catastrophe

Cited by 14 publications

References 24 publications

Superconducting YBCO Foams as Trapped Field Magnets

Superconducting YBCO Foams as Trapped Field Magnets

Natural strategies for creating non-equilibrium morphology with self-repairing capability towards rapid growth of excellent YBa₂Cu₃O_7−δ crystals

Corrosion of YBCO bulk superconductor in air

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YBa2Cu3O7‐δ superconductor bulks composited by Y2BaCuO5 nanoparticles derived from homogeneous nucleation catastrophe

Cited by 14 publications

References 24 publications

Superconducting YBCO Foams as Trapped Field Magnets

Superconducting YBCO Foams as Trapped Field Magnets

Natural strategies for creating non-equilibrium morphology with self-repairing capability towards rapid growth of excellent YBa2Cu3O7−δ crystals

Corrosion of YBCO bulk superconductor in air

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YBa₂Cu₃O_7‐δ superconductor bulks composited by Y₂BaCuO₅ nanoparticles derived from homogeneous nucleation catastrophe

Natural strategies for creating non-equilibrium morphology with self-repairing capability towards rapid growth of excellent YBa₂Cu₃O_7−δ crystals