Magneto-optical investigation on YBa2Cu3O7−x thin films on SrTiO3

✍ Scribed by Dimitrios Vassiloyannis

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 405 KB
• Volume: 437-438
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2005.12.068

✦ Synopsis

The vortex motion when the external field penetrates perpendicularly square YBa 2 Cu 3 O 7Àx thin films deposited on misoriented SrTiO 3 platelets has been pictured in situ by magneto-optical imaging. The visualized vortex pinning profile allows large-scale characterization of the superconducting quality of the thin film surface enabling tracing of areas of reduced superconducting properties or of various film defects. The obtained magneto-optical (M-O) images in combination with magnetization measurements can produce reliable estimations of the supercurrents flowing at each point of the film surface. The findings indicate a 40% anisotropy in the current distribution along the different [1 0 0] and [0 1 0] orientations for films deposited on substrates miscut at angles >1.69°.