The Tc of rare-earth doped Bi-2201 depends on the post-sintering treatment, with a change of behaviour occuring around x=0.40 in the formula Bil.asSr2.os\_xRxCuOq, R=La, Pr and Nd. For x\_<0.4, samples prepared in air are overdoped and TΒ’ is increased by annealing in argon. For a given x, Tc is inde
Optimization of the Bi-2201 superconductors with Pb and La co-doping
β Scribed by Y. Arao; M. Tange; M. Yokoshima; H. Ikeda; R. Yoshizaki
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 141 KB
- Volume
- 426-431
- Category
- Article
- ISSN
- 0921-4534
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Samples of the Bi-Te-Pb-Sr-Ca-Cu-O system with various nominal compositions were prepared by a free melt-quenching and subsequent annealing procedure. Phase formation, To, Jc, Be2 (0), and irreversibility line were investigated employing direct measurements as well as estimations by AC losses and AC
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