Optimal, Nanodefect Configurations via Strain-Mediated Assembly for Optimized Vortex-Pinning in Superconducting Wires from 5K-77K

29th International Symposium on Superconductivity

Goyal, A.^1,2 ; Wee, S.H.^1,3

Oak Ridge National Laboratory, Oak Ridge

TN

37831, United States^1

University at Buffalo, Buffalo

NY

14227, United States^2

Tribogenics Inc., 5440 McConnell Ave, Los Angeles

CA

90066, United States^3

关键词: Applied magnetic fields;    Coated conductors;    High operating temperature;    Low operating temperature;    Nanoscale defects;    Optimal properties;    Pinning forces;    Temperature regimes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/871/1/012039/pdf
DOI  :  10.1088/1742-6596/871/1/012039

来源: IOP

【 摘 要 】

Engineered nanoscale defects within REBa2Cu3O7-δbased coated conductors are of great interest for enhancing vortex-pinning, especially in high-applied magnetic fields. We have conducted extensive research to optimize vortex-pinning and enhance Jcvia controlled introduction of various types of nanoscale defects. This paper provides a summary on how density, morphology, and composition of these engineered nanoscale defects affects vortex-pinning in different field and angular regimes in the temperature regime of 5K-77K. It is shown that certain nanodefect configurations that provide the best performance at high-operating temperatures also result in the optimal properties with record values of the critical current density and the pinning force at low operating temperatures and high-applied magnetic fields.