| Autor: |
Ziwei Zhou, Yanru Huang, Guojun Cai, Misra, Raja Devesh Kumar |
| Předmět: |
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| Zdroj: |
Metallic Materials / Kovové Materiály; 2024, Vol. 62 Issue 6, p355-362, 8p |
| Abstrakt: |
The critical current density (Jc) dependence on an applied magnetic field was studied for a prototype REBCO with Zr doping content coated conductor fabricated by metal-organic chemical vapor deposition (MOCVD). The study revealed that different rare-earth (RE) cations were incorporated into the superconducting film to form RE2O3 and BaZrO3 (BZO). RE2O3 nanoparticles had a stronger pinning effect on magnetic flow along the direction of the a-b plane of films. With the increase of RE content, many RE2O3 nanoparticles effectively inhibited the precipitation of Ba-Cu-O heterophase, and when RE/Ba ≥ 0.65, the increase of coarse Ba-Cu-O phases wrecked the continuity of matrix and crystal quality of films, causing a decrease on Jc (90◦). After excessive RE elements (RE/Ba = 0.70) were doped in film, RE2O3 phases were changed from granular to lamellar and cut off the continuous growth of BZO along the c-axis, reducing Jc (0◦) of films. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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