Work

A Method to Enhance Thickness and Current-Carrying Capacity of BZO-Doped YBCO Multilayers

Year: 2024

Type: article

Abstract: This study demonstrates a significant enhancement in the in-field critical current density and its isotropy in BZO-doped YBCO multilayer structures, achieved through improvements in the crystalline quality of YBCO, which extend the electron mean free path. The incorporation of undoped YBCO, alongside alternating BZO-doped and Ca-doped YBCO layers, revealed that the Ca-doped intermediate layer positively influenced the interface quality, promoting better growth in the subsequent layers. These improvements also enabled an increase in total film thickness, thereby enhancing the current-carrying capacity. Furthermore, the paper discusses the mechanisms behind these enhancements and presents a model explaining how nanorod pinning centres in different layers affect vortex pinning behavior. These insights offer valuable guidance for designing future YBCO coated conductor structures.

Source: IEEE Transactions on Applied Superconductivity

DOI: 10.1109/tasc.2024.3504411

Authors: M. M. Aye, E. Rivasto, H. Rijckaert, H. Huhtinen, P. Paturi

Institutions: University of Turku, Ghent University

Language: English

Topic: Superconducting Materials and Applications

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,495

Funders: Fonds Wetenschappelijk Onderzoek, Universiteit Antwerpen, Vlaamse regering, Jenny ja Antti Wihurin Rahasto