Irreversibility lines of Bi-2212 single crystals irradiated by 6 GeV-Pb ions
| Autor: | D. Groult, J. Provost, Ch. Simon, Vincent Hardy |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
chemistry.chemical_classification
Flux pinning Materials science High-temperature superconductivity Condensed matter physics Energy Engineering and Power Technology Condensed Matter Physics Magnetic hysteresis Electronic Optical and Magnetic Materials Ion Vortex law.invention chemistry law Irradiation Electrical and Electronic Engineering Inorganic compound Single crystal |
| Zdroj: | Physica C: Superconductivity. 205:371-376 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/0921-4534(93)90404-e |
| Popis: | 6 GeV-Pb ion irradiation effects on the irreversibility line (IL) of Bi-2212 single crystals have been studied as a function of the induced columnar defect density. The crystals were irradiated parallel to the c -axis and the magnetic study of the IL was carried out with the field applied along this same direction. In a broad range of intermediate temperatures, we observe that the IL position is mainly determined by the value of the track density. The irreversibility fields in this domain correspond to a vortex density close to the track density, and the temperature dependence is weak. At lower temperatures, the ILs tend to join the position prior to irradiation and, at higher temperatures, a net change in the B irr ( T ) dependence is observed. This crossover at high temperatures could be interpreted as the result of a 3D-2D transition in the vortex lattice. |
| Databáze: | OpenAIRE |
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