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Enhanced performance of GdBCO bulk superconductors by doping a new kind of YGdBa4CuNbO y nanoparticles
Superconductor Science and Technology ( IF 3.6 ) Pub Date : 2024-01-25 , DOI: 10.1088/1361-6668/ad1e32 YanLan Cui , WanMin Yang
Superconductor Science and Technology ( IF 3.6 ) Pub Date : 2024-01-25 , DOI: 10.1088/1361-6668/ad1e32 YanLan Cui , WanMin Yang
In this work, a new kind of YGdBa4CuNbO
y
(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 x-ray diffraction data and scanning electron microscopy 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 (J
c-max) of the samples was enhanced from 3.48 × 104 A cm−2 to 8.63 × 104 A cm−2 (77 K) in the self-field as the doping amount increased from 0 wt% to 7 wt%. In addition, the GdBCO sample with YGdNb-11411 particles also showed an enhanced flux pinning force density and relatively high J
c 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.
更新日期：2024-01-25
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