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Title: Influence of processing parameters on critical currents and irreversibility fields of fast melt processed YBa2Cu3O7 with Y2BaCuO5 inclusions
Authors: Rosseel, Kris
Dierickx, D
Vanacken, Johan
Trappeniers, Lieven
Boon, Willy
Herlach, Fritz
Moshchalkov, Victor
Bruynseraede, Yvan
Issue Date: 1997
Publisher: Iop publishing ltd
Series Title: Applied superconductivity 1997, vols 1 and 2 issue:158 pages:1587-1590
Abstract: The presence of a homogeneous distribution of submicron Y2BaCuO5 green phase inclusions strongly enhances the critical currents in melt-textured YBa2Cu3O7. In order to minimize the mean Y2BaCuO5 particle size, a fast melt-processing (FMP) scheme was developed, using cooling rates of 30 degrees C/hour, 120 degrees/hour and 180 degrees/hour during the YBa2Cu3O7 crystal growth. Detailed magnetisation measurements in pulsed fields up to 50 tesla and in the temperature interval of 5K to 77K show a clear decrease of the temperature and field dependence of the critical current J(c) as well as an enhancement of the irreversibilty field H-irr with increasing cooling rate (e.g. H-irr(60K)> 50 tesla at the highest applied cooling rates).
ISSN: 0951-3248
Publication status: published
KU Leuven publication type: DI
Appears in Collections:Solid State Physics and Magnetism Section

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