.png){kind=icon}
.png){kind=icon}
Return
Enhanced superconducting performance in solution-derived YBa2Cu3O7-δ films using parallel ion-beam structure modification method
.png){kind=icon}
PRE
AI
DOI：10.1016/j.jallcom.2021.158607.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Surface modification of superconductors has been extensively researched. However, such modification usually degrades the superconducting properties by creating rough surface morphologies and non-superconducting phase impurities, with the exception of the antidot method modification. Here, a new parallel ion-beam structure modification (PISM) method proves extraordinarily effective in improving the superconductivity of solution-derived YBa2Cu3O7-delta (YBCO) films. Experimental results demonstrate that the surface morphologies of the treated YBCO films become smoother than the pristine samples, and large-sized pores, needle-like a-axis grains, and/or secondary-phase impurities are almost completely removed. Treatment by the PISM method affords remarkable increase ratios Delta J(c) of the critical current density by 128.9% or more, where greater improvements are achieved by increasing the Ar+ ion bombardment time. The current-carrying capacity is improved by newly generated impurities, i.e., Ba-Cu-O phases acting as Delta l volume pinning centers, and drastic shortening of Cu-O bonds derived from the non-uniform compressive strain. (C) 2021 Elsevier B.V. All rights reserved.
Keywords:
Superconductor
Surface modification
Vortex pinning
Critical current density
Raman spectra
AI Summary
Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.
Journal
IF:
6.3
Papers:
8.3W
Citations:
24.3W