Influence of annealing on the superconductivity in (Pb,Cu)Sr2(Y,Ca)Cu2O7−δ ceramics
✍ Scribed by Satoshi Ohara; Makoto Nakao; Ben Huybrechts; Yuichi Watanabe; Masasuke Takata
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 402 KB
- Volume
- 259
- Category
- Article
- ISSN
- 0921-4534
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Bulk superconductivity up to 90 K has been achieved in the Hg containing cuprate (Pb, Hg)Sr2(Cal\_xYx)Cu2OT\_6 when x= 0.3, which has the highest T¢ among the Pb based materials. The crystal structure of the newly discovered Hg containing Pb based 1212 phase has been investigated by Rietveld analysi
A series of solid solutions containing CO3 groups, (CyCul\_y)(Srl \_z/2Caz/2)2(Y1 \_xCax\_zSrz)Cu20 d with 0.30<x <0.70, was prepared at 1313 K under the atmosphere of 02-4202. The values ofy (0.48-0.67) and z (0.14--0.28) depend on the total Ca content, x. The length of the a-axis increases from 3.