Superconductivity in La-doped Bi “2201”
✍ Scribed by D.C. Sinclair; S. Tait; J.T.S. Irvine; A.R. West
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 344 KB
- Volume
- 205
- Category
- Article
- ISSN
- 0921-4534
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📜 SIMILAR VOLUMES
atmospheres. According to the structural investigations the 2201 phase shows solid solution behaviour. However, irrespectively of the method of preparation the appearance of superconductivity is confined to multiphase material. Furthermore, the superconducting volume fraction is uniformly as low as
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 T¢ is increased by annealing in argon. For a given x, Tc is inde