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Superconductivity in Y-Ba-Cu-Ag-O and Y-Ba-Cu-Pt-O Systems

Published online by Cambridge University Press:  28 February 2011

V. T. Kovachev ,
M. M. Gospodinov ,
E. S. Vlachov ,
V. A. Lovchinov ,
P. K. Svestarov ,
K. A. Nenkov ,
A. K. Stoianova ,
D. A. Dimitrov ,
B. M. Terziiska  and
S. Tinchev
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V. T. Kovachev
Affiliation:
Institute of Solid State Physics, Lenin Blvd. 72, 1184 Sofia, Bulgaria
M. M. Gospodinov
Affiliation:
Institute of Solid State Physics, Lenin Blvd. 72, 1184 Sofia, Bulgaria
E. S. Vlachov
Affiliation:
Institute of Solid State Physics, Lenin Blvd. 72, 1184 Sofia, Bulgaria
V. A. Lovchinov
Affiliation:
Institute of Solid State Physics, Lenin Blvd. 72, 1184 Sofia, Bulgaria
P. K. Svestarov
Affiliation:
Institute of Solid State Physics, Lenin Blvd. 72, 1184 Sofia, Bulgaria
K. A. Nenkov
Affiliation:
Institute of Solid State Physics, Lenin Blvd. 72, 1184 Sofia, Bulgaria
A. K. Stoianova
Affiliation:
Institute of Solid State Physics, Lenin Blvd. 72, 1184 Sofia, Bulgaria
D. A. Dimitrov
Affiliation:
Institute of Solid State Physics, Lenin Blvd. 72, 1184 Sofia, Bulgaria
B. M. Terziiska
Affiliation:
Institute of Solid State Physics, Lenin Blvd. 72, 1184 Sofia, Bulgaria
S. Tinchev
Affiliation:
Institute of Electronics, Lenin Blvd. 72,1184 Sof ia, Bulgaria
M. Taslakov
Affiliation:
Institute of Solid State Physics, Lenin Blvd. 72, 1184 Sofia, Bulgaria
T. Mydlarz
Affiliation:
International Laboratory for High Magnetic Fields and Low Temperatures, Wrozlaw, Poland
M. Czyczek
Affiliation:
International Laboratory for High Magnetic Fields and Low Temperatures, Wrozlaw, Poland
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A STUDY OF THE Y-Ba-Cu-Ag-O SYSTEM: The specimens studied were produced using the standard ceramic technique. High purity source materials Y2O3, BaCO3CuO, and Ag2O were used. Solid state synthesis was carried out at 900 C for six hours in oxygen ambient. Pressed samples of 16 mm diameter and 2 mm thick were processed in an atmosphere of pure oxygen at 950 C for 12 hours. The transition temperature to the superconducting state was measured by the four point probe resistance technique. The ac magnetic susceptibility was determined by the method outlined in [1].

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 659
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

1. Cava, R.J., preprint Phys. Rev. Lett. (1987)Google Scholar
2. Grant, P.M., Phys. Rev. B1, 35, 7242 (1987)Google Scholar
3. Kadowsky, K., Huang, Y.K., Van Spra, M., Menovsky, A.A., Physica 145 B (1987), 1–4 Google Scholar