Comparison of the Microstructure and Superconducting Properties of Eu-Ba-Cu-O and Gd-Ba-Cu-O Single Grain Samples
View / Open Files
Publication Date
2022Journal Title
IEEE Transactions on Applied Superconductivity
ISSN
1051-8223
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Volume
PP
Issue
99
Pages
1-1
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Mousavi, T., Shi, Y., Durrell, J., Grovenor, C., & Speller, S. (2022). Comparison of the Microstructure and Superconducting Properties of Eu-Ba-Cu-O and Gd-Ba-Cu-O Single Grain Samples. IEEE Transactions on Applied Superconductivity, PP (99), 1-1. https://doi.org/10.1109/TASC.2022.3144110
Abstract
Abstract— Bulk Rare Earth–Ba–Cuprate [(RE)BCO]
superconductors fabricated in the form of large single
grains consisting of a REBa2Cu3O7-δ (RE-123) matrix and
RE2BaCuO5 (RE-211) inclusions can generate trapped
magnetic fields that are up to ten times higher than the
maximum fields obtainable in conventional Fe-based
permanent magnets.
The choice of the Rare Earth (RE) element plays a key role
in determining the growth rate of single grains, the precise
microstructure, mechanical properties and hence the final
superconducting properties of the bulk samples, and also
the likelihood of RE substitution onto the Ba site which can
degrade the performance.
In this work, we have studied the growth and
microstructure of (RE)BCO single grains with RE = Gd
and Eu, where the degree of Ba substitution is known to be
very different. We have carried out detailed
microstructural characterization of the phase distribution
and composition using high resolution electron microscopy
to understand the effects of Gd and Eu on the uniformity of
the samples, the distribution of the secondary 211 phase,
porosity and chemical variations in different regions of the
melt-grown single grains.
Sponsorship
EP/T014679/1
Funder references
EPSRC (EP/T014679/1)
Identifiers
External DOI: https://doi.org/10.1109/TASC.2022.3144110
This record's URL: https://www.repository.cam.ac.uk/handle/1810/333409
Statistics
Total file downloads (since January 2020). For more information on metrics see the
IRUS guide.