ISSN:
1572-9605
Keywords:
Ag-YBa2Cu3O7−x composites
;
critical current
;
microstructure
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract Composites of Ag-YBa2Cu3O7−x were synthesized and carefully characterized for crystal structure and microstructure by X-ray diffraction, optical microscopy, SEM, TEM, and EDAX techniques in order to investigate the effect of Ag additions on the superconducting properties of 123 compounds. The a.c. susceptibility data show thatT c (onset) of 123+Ag composites vary between 90.2 and 91.8 K. TheJ c values we measured for 123 material without silver were in the range of earlier reported values for the pure 123 material. Whereas there is a relatively small increase in the critical current for the YBCO/Ag2O ratio of 3, the variation of the grain size of the composites shows that theseJ c changes are due to slight variations in the grain size rather than any dramatic effect of Ag inclusions as speculated earlier.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00624507
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