G
G. Krabbes
Researcher at Leibniz Association
Publications - 96
Citations - 2117
G. Krabbes is an academic researcher from Leibniz Association. The author has contributed to research in topics: Flux pinning & Magnetization. The author has an hindex of 25, co-authored 96 publications receiving 2054 citations.
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Superconducting bulk magnets: Very high trapped fields and cracking
TL;DR: In this article, the authors reported improved trapped fields for bulk melt-textured YBa2Cu3O7−δ (YBCO) material in the temperature range between 20 and 50 K.
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Trapped magnetic fields larger than 14 T in bulk YBa2Cu3O7−x
TL;DR: In this article, high trapped fields were found in zinc-doped, bulk melt-textured YBa2Cu3O7−x (YBCO) material showing a pronounced peak effect in the field dependence of the critical current density.
Journal ArticleDOI
Zn doping of YBa2Cu3O7 in melt textured materials: peak effect and high trapped fields
G. Krabbes,G. Fuchs,P. Schätzle,S Gruß,Jai Won Park,Ferdinand Hardinghaus,G Stöver,Roland Hayn,S.-L. Drechsler,T Fahr +9 more
TL;DR: In this article, a modified melt crystallization process (MMCP) was applied to prepare single grain YBCO bulk material with Zn partially substituting for Cu. Hole doping was controlled by an appropriate oxidizing treatment of the as-grown bulk.
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Multi-seeded melt crystallization of YBCO bulk material for cryogenic applications
TL;DR: In this paper, up to four biaxial oriented Sm-123 seeds were placed on the top of rectangular shaped YBCO bars (up to ), and the oriented grown single grains were joined by partially coherent grain boundaries with an improved current transport capability and high levitation forces with overall values of 55-65 N.
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New permanent magnets
TL;DR: In this article, the authors obtained a trapped magnetic field as high as 14.4 T in a melt-textured YBCO bulk sample of a few centimeters in diameter, which is the highest value ever achieved in a bulk superconductor.