| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
Structural and Compositional Analyses of Ba2YbNbO6-doped YBa2Cu3O7-x Superconducting Thin Films |
| Author(s) |
Masanari Kuroki, Manabu Ishimaru, Tomoya Horide, Kaname Matsumoto, Ryusuke Kita |
| On-Site Speaker (Planned) |
Masanari Kuroki |
| Abstract Scope |
To increase the critical current density of coated conductors, attempts have been made to introduce pinning centers to disrupt the movement of quantum magnetic flux in REBa2Cu3O7-x (REBCO, RE: rare earth) thin films. Ba2RENbO6 (RE = Yb, Er, Lu, etc.) with a double-perovskite structure have attracted much attention as nanorods because of their advantages such as high degree of freedom in composition and lattice parameters. In the present study, we prepared Ba2YbNbO6 (BYNO)-doped YBa2Cu3O7-x thin films by pulsed laser deposition and characterized them by transmission electron microscopy (TEM). It was found that dense nanorods almost perpendicular to the substrate surface and stacking faults parallel to the substrate surface are formed in the thin films. In addition, Y-rich nanoparticles are dispersed in the thin films. This suggests that hybrid pinning structures composed of nanoparticles, nanorods, and planar defects are spontaneously formed in the YBCO + BYNO films. |