Improved Superconductivity and Structural Mechanism
Analysis of Y0.55Gd0.45Ba2Cu3O7–x/SrTiO3/Y0.55Gd0.45Ba2Cu3O7–x
Tri-layer |
Tong Zheng, Jianming Xu,* Shuai Jiang and Ninghua Ma
Pages : 35-41
DOI : 10.1080/0371750X.2024.2290271 |
Abstract |
REBa2Cu3O7–ä (REBCO) coated conductors has great potential in the field of energy
transmission and device applications. However, one of the main obstacles is the
limitation of critical current and critical current density of REBCO coated conductors,
which restricts its wide application in the above fields. Herein a method to improve
the thickness effect based on sandwich structure and SrTiO3 (STO) interlayer has
been proposed. The sandwich structural coated conductor displayed better
superconductivity. Compared with single-step and multi-step Y0.55Gd0.45Ba2Cu3O7–x
(YGdBCO) film, the critical current of YGdBCO/STO/YGdBCO increased by 52.4% and
25.3%, respectively. Meanwhile, the micro-mechanism of current transport in the
superconducting film has been investigated and discussed in detail. The segregation
and diffusion of elements in the superconducting film and the metallic parts formed
within the STO interlayer connected the top and bottom layers and provided channels
for current transport. Thickness effect was significantly improved through this method
under the mechanism discussed, which should help to improve the large-scale
application of REBCO coated conductors. |
Full text : Subscribe to Download Full Text |
[Go Back] |
|