Focus on Pinning Properties of RE-Ba-Cu-O Bulks and Tapes via Lift Factor Analysis

Abstract

RE-Ba-Cu-O bulk superconductors can be magnetized to generate high flux density, making them promising for applications such as desktop NMR&MRI, HTS undulators and hybrid magnets assembled with magnets wound by HTS tapes. For these novel concepts, the pinning properties of RE-Ba-Cu-O bulk materials are critical for generating high trapped field and resisting demagnetization especially in cryogenic environments. In the presentation, we are going to report the trapped field of various RE-Ba-Cu-O samples (samples consisting different RE elements and chemical doping) under different temperatures and their lift factor as a macroscopic parameter. The lift factor of trapped field will be compared with that of the HTS tapes to reveal the difference in pinning characteristics between thin film and bulk HTS materials. Best on the achieved understanding, optimization from the material point of view will be proposed.