2016
DOI: 10.1016/j.jallcom.2016.08.069
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Clarification of magnetic levitation force and stability property of multi-seeded YBCO in point of supercurrent coupling effect

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Cited by 29 publications
(16 citation statements)
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“…The strongly connected grain boundaries inside the multiseeded YBCO induce higher levitation and guidance forces and trapped field because of the superposition of the current and so current coupling at the grain boundaries. [35][36][37] One can see from Figure 8A that the intragrain supercurrent produces a bulk shielding current (blue circle) flowing across the whole sample due to the suitable crystallization around the single grain and composition of superconducting and nonsuperconducting phases (CuO and BaCuO 2 ). It was reported in the literature that the holes and cracks are formed in the grain boundary because of different expansion coefficient between the Y-123, BaCuO 2 , and CuO phases 14 and also residual melting phases due to the unreacted melting phases in this region.…”
Section: Resultsmentioning
confidence: 99%
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“…The strongly connected grain boundaries inside the multiseeded YBCO induce higher levitation and guidance forces and trapped field because of the superposition of the current and so current coupling at the grain boundaries. [35][36][37] One can see from Figure 8A that the intragrain supercurrent produces a bulk shielding current (blue circle) flowing across the whole sample due to the suitable crystallization around the single grain and composition of superconducting and nonsuperconducting phases (CuO and BaCuO 2 ). It was reported in the literature that the holes and cracks are formed in the grain boundary because of different expansion coefficient between the Y-123, BaCuO 2 , and CuO phases 14 and also residual melting phases due to the unreacted melting phases in this region.…”
Section: Resultsmentioning
confidence: 99%
“…Schematic illustration of the intragrain supercurrents (the dotted black circles) circulating inside each grain and intergrain supercurrent (the dotted blue circles) flowing across the grain boundaries in the triangular‐seeded YBCO samples is shown in Figure 8 (the continuous blue circles represent the shielding supercurrents flowing across the whole sample). The strongly connected grain boundaries inside the multiseeded YBCO induce higher levitation and guidance forces and trapped field because of the superposition of the current and so current coupling at the grain boundaries 35–37 . One can see from Figure 8A that the intragrain supercurrent produces a bulk shielding current (blue circle) flowing across the whole sample due to the suitable crystallization around the single grain and composition of superconducting and nonsuperconducting phases (CuO and BaCuO 2 ).…”
Section: Resultsmentioning
confidence: 99%
“…Once the targeted temperature was stabilized, data were recorded while the superconducting sample moved 0 › +7 mm › -7 mm › +7 mm laterally in the x direction (details of levitation force measurement were reported in Ref. [35,36]).…”
Section: Sample Fabrication and Experimental Detailsmentioning
confidence: 99%
“…Researchers used four numbers of the same YBCO bulks in different arrays above two different PMGs to investigate the levitation force performance of the Maglev system 31 As well as the studies based on the HTS, researchers also focused on the PMG side in magnetic rail. But there are commonly used two types of PMGs, conventional 32 and Halbach types, 33 and there is little left to do anymore to optimise them except for increasing the number of permanent magnets (PM). An effective method to increase the levitation efficiency is hybrid systems in which the PMs are used on the onboard side together with the HTSs 34–36 .…”
Section: Introductionmentioning
confidence: 99%