Effect of annealing upon the high-Tc superconductor Bi2Sr2CaCu2O8+δ
| Autor: | Geetha Balakrishnan, D. McK. Paul, J.W. Hodby, S. T. Johnson, A.J.S. Chowdhury, Peter D. Hatton, J.S. Gardner |
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| Rok vydání: | 1998 |
| Předmět: |
Superconductivity
Materials science Condensed matter physics Annealing (metallurgy) Scattering Energy Engineering and Power Technology chemistry.chemical_element Crystal structure Condensed Matter Physics Oxygen Electronic Optical and Magnetic Materials Crystal chemistry Condensed Matter::Superconductivity X-ray crystallography Cuprate Electrical and Electronic Engineering |
| Zdroj: | Physica C: Superconductivity. 299:240-248 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/s0921-4534(97)01849-2 |
| Popis: | The relationship between carrier concentration, structure and composition in Bi 2 Sr 2 CaCu 2 O 8+ δ is amongst the most complex of the high- T c superconducting cuprates. In this paper a number of structural subtleties of the system are discussed based on the results of high-resolution X-ray scattering measurements from single crystals. It is found that the annealing of an oxygen-rich crystal significantly changes the character of certain diffuse scattering features. Accompanying analysis of composition and measurements of T c suggest these changes may be the signature of oxygen ordering which is influential to the superconductivity. |
| Databáze: | OpenAIRE |
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