期刊
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
卷 35, 期 8, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6668/ac7ae3
关键词
CSD; nanocomposite; nanoparticles; pinning; thin film; superconductor; YBCO
资金
- European Union [H2020/2016-722071]
- Research Foundation-Flanders (FWO) [1273621N]
- Jenny and Antti Wihuri Foundation
- US National Science Foundation [DMREF-1922234]
- DOE Office of Science by Brookhaven National Laboratory [DE-SC0012704]
Two different types of HfO2 nanocrystals were studied to investigate their effect on the structural defects in the YBCO matrix. The results showed that the crystallinity, lattice parameters, nanocrystal structures, and core diameter of the nanocrystals played a significant role in the formation of structural defects around the particles in the YBCO matrix, leading to different pinning performances.
Two different types of monoclinic HfO2 nanocrystals were employed in this work to study the effect of nanocrystal shape and crystallinity on the structural defects in the YBa2Cu3O7-delta (YBCO) matrix as it leads to an enhancement of pinning performances of solution-derived YBCO nanocomposite films. In this work the nanorod-like HfO2 nanocrystals obtained from surfactant-controlled synthesis led to short intergrowths surrounding the particles, while spherical HfO2 nanocrystals from the solvent-controlled synthesis led to the formation of long stacking faults in the YBCO matrix. It means that the small difference in crystallinity, lattice parameters, nanocrystal structures, core diameter of preformed nanocrystals in colloidal solutions have a strong influence on the formation of the structural defects around the particles in the YBCO matrix, leading to different pinning performances.
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