scholarly journals Reliable single grain growth of (RE)BCO bulk superconductors with enhanced superconducting properties

2020 ◽  
Vol 33 (2) ◽  
pp. 024004 ◽  
Author(s):  
David A Cardwell ◽  
Yunhua Shi ◽  
Devendra K Numburi
Keyword(s):  
Grain Growth ◽  
Superconducting Properties ◽  
Bulk Superconductors ◽  
Single Grain

The Influence of CeO2 Addition on Microstructure and Superconducting Properties of GdBCO-Ag Single Grain Bulk Superconductors

2021 ◽  
pp. 161697
Author(s):  
Petra Hajdova ◽  
Pavel Diko ◽  
Michal Rajnak ◽  
Jozef Bednarcik ◽  
Vitaliy Antal ◽  
...  
Keyword(s):  
Superconducting Properties ◽  
Bulk Superconductors ◽  
Single Grain ◽  
Grain Bulk

Mg-doped Nd-Ba-Cu-O generic seed crystals for the top-seeded melt growth of large-grain (rare earth)-Ba-Cu-O bulk superconductors

2006 ◽  
Vol 21 (6) ◽  
pp. 1355-1362 ◽  
Author(s):  
Y. Shi ◽  
N. Hari Babu ◽  
K. Iida ◽  
D.A. Cardwell
Keyword(s):  
Rare Earth ◽  
Volume Fraction ◽  
Seed Crystal ◽  
Superconducting Properties ◽  
Seed Crystals ◽  
Bulk Superconductors ◽  
Wide Range ◽  
Single Grain ◽  
Basic Characteristics ◽  
Mg Doped

We report the fabrication of Mg-doped NdBCO generic seed crystals, which have been developed recently for the fabrication of any rare earth (RE) based (RE)-Ba-Cu-O single-grain superconductor, with a wide range of Nd1+xBa2-xCu3-yMgyO7-δ compositions. Three basic characteristics of the seed crystals required for effective seeding of bulk (RE)BCO materials were studied in detail. We report the chemical, crystallographic, microstructural, and superconducting properties of the seeds and demonstrate clearly their potential to process various (RE)BCO superconductors in single-grain form. The melting point, volume fraction of Mg-rich inclusions in the bulk microstructure, and the chemical composition of the Nd1+xBa2-xCu3-yMgyO7-δ superconducting matrix of the seed crystals were studied as a function of initial MgO content. Finally, the suitable range of MgO-content within the generic seed crystal that controls effectively the orientation of the seeded grain without compromising its superconducting properties relative to those of the Mg-free compound is identified based on the wide range of seed crystal compositions investigated.

scholarly journals A robust seeding technique for the growth of single grain (RE)BCO and (RE)BCO–Ag bulk superconductors

2018 ◽  
Vol 31 (4) ◽  
pp. 044003 ◽  
Author(s):  
Devendra K Namburi ◽  
Yunhua Shi ◽  
Anthony R Dennis ◽  
John H Durrell ◽  
David A Cardwell
Keyword(s):  
Bulk Superconductors ◽  
Single Grain

scholarly journals Comparison of the effects of platinum and CeO2on the properties of single grain, Sm–Ba–Cu–O bulk superconductors

2016 ◽  
Vol 29 (12) ◽  
pp. 125002 ◽  
Author(s):  
Wen Zhao ◽  
Yunhua Shi ◽  
Monika Radušovská ◽  
Anthony R Dennis ◽  
John H Durrell ◽  
...  
Keyword(s):  
Bulk Superconductors ◽  
Single Grain
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