Heavy ions irradiation effects on magnetization of Tl2Ba2CaCu2O8 and TlBa2CaCu2O7 single crystals
| Autor: | J.C. Frison, B. Raveau, Leandro R. Tessler, J. Provost, Vincent Hardy, Daniel Groult, S. Bouffard, J.P. Chaminade |
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| Rok vydání: | 1992 |
| Předmět: |
High energy
Materials science Condensed matter physics Physics::Instrumentation and Detectors Mechanical Engineering Condensed Matter Physics Magnetic hysteresis Fluence Ion Magnetic field Magnetization Mechanics of Materials Condensed Matter::Superconductivity Lattice (order) General Materials Science Irradiation Atomic physics |
| Zdroj: | Materials Science and Engineering: B. 13:279-285 |
| ISSN: | 0921-5107 |
| Popis: | Magnetization measurements were performed as a function of magnetic field and time in Tl2Ba2CaCu2O8 and TlBa2CaCu2O7 single crystals to study the effects of high energy Xe ion irradiation. The effective pinning energies at 6 K and 40 K have been evaluated from magnetic relaxation measurements. The activation energies are hardly changed after irradiation. The study of magnetization hysteresis shows that an irradiation fluence of 2 × 1011ionscm−2 enhanced hysteresis at 6 K in both crystals. But a fluence of 1012 ions cm−2 was detrimental for the 2212 sample which is the most sensitive to heavy ion irradiation damage in the Tl-cuprate family. The magnetic hysteresis at 70 K after irradiation is more drastically increased than at 6 K. This spectacular modification is interpreted by a recovery of the 3D character of the flux line lattice. |
| Databáze: | OpenAIRE |
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