Particle Irradiation Induced Defects in High Temperature Superconductors
| Autor: | Wai-Kwong Kwok, Lisa Paulius, Matthew Smylie, Prashanta Niraula, Asghar Kayani, Shahid Iqbal, Ulrich Welp, E. Bokari |
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| Rok vydání: | 2019 |
| Předmět: |
Superconductivity
High-temperature superconductivity Materials science Condensed matter physics Mechanical Engineering Physics::Medical Physics Particle irradiation 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Magnetic field Vortex law.invention Mechanics of Materials law Condensed Matter::Superconductivity General Materials Science Nanorod Irradiation 0210 nano-technology Electrical conductor |
| Zdroj: | MRS Advances. 4:119-124 |
| ISSN: | 2059-8521 |
| Popis: | We use irradiation with 50-MeV Cu-ions to create vortex pinning defects in high-temperature superconducting Y1Ba2Cu3O7-x coated conductors using a beam-rastering approach that allows for the uniform irradiation of large ample areas. Our samples contain barium zirconate nanorods as pre-existing vortex pinning defects. By irradiating the samples at angles of 0o, 15oand 30o from the crystallographic c-axis we explore the interplay between pre-existing and irradiation-induced pinning and find that irradiation at 30o leads to a moderate enhancement of Jc at 5 K at high fields (greater than 2 Tesla). In contrast, Jc was suppressed for all temperatures and fields for other angles of irradiation. Optimized particle irradiation procedures offer a way for improving the performance of high-temperature superconducting wires for use in high magnetic fields without the need for changing wire synthesis protocols. |
| Databáze: | OpenAIRE |
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