Enhancement of pinning and the peak effect in Y1–Fe Ba2Cu3O high-temperature superconductors
Complex structural and magnetic studies of polycrystalline samples of the Y1-xFexBa2Cu3Oy high-Tc superconductor (x = 0, 0.02, 0.05) have been carried out in order to determine the effect of weak doping with a magnetic 3d ion on structural changes and the critical current density Jc. An increase in...
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| Published in: | Current applied physics Vol. 41; pp. 116 - 122 |
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| Main Authors: | , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
한국물리학회
01.09.2022
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| Subjects: | |
| ISSN: | 1567-1739, 1878-1675 |
| Online Access: | Get full text |
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| Summary: | Complex structural and magnetic studies of polycrystalline samples of the Y1-xFexBa2Cu3Oy high-Tc superconductor (x = 0, 0.02, 0.05) have been carried out in order to determine the effect of weak doping with a magnetic 3d ion on structural changes and the critical current density Jc. An increase in the Fe content results in a significant change in Jc and its field dependence. The dependences Jc(H) become nonmonotonic and demonstrate a pronounced peak (peak effect); as a result, the Jc increases strongly in wide temperature and magnetic field regions. The analysis of the field dependences of the pinning force reveals a scaling behavior. The parameters of the scaling function correspond to the point magnetic defects under strong effects of a thermally activated flux flow. Thus, the weak Fe doping (several molar percent) is a promising way to significant improvement of transport properties of high-Tc superconducting materials based on 123-type compounds. KCI Citation Count: 0 |
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| ISSN: | 1567-1739 1878-1675 |
| DOI: | 10.1016/j.cap.2022.06.019 |