Magneto-optical imaging of magnetic flux distribution in high-Tc superconductors

✍ Scribed by K. Ueno; H. Murakamia; I. Kawayama; Y. Doda; M. Tonouchi; N. Chikumoto

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 416 KB
• Volume: 412-414
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2004.01.149

✦ Synopsis

Prototype systems of home-made magneto-optical microscopes were fabricated, and preliminary studies were carried out using Bi 2 Sr 2 CaCu 2 O 8þd single crystals and an YBa 2 Cu 3 O 7Àd superconductor vortex flow transistor. In the study using BSCCO crystals, we succeeded in the observation of magnetic flux penetration into half-peeled thin flake region on the crystal surface, and it was found that the magnetic fluxes penetrate in characteristic one-dimensional alignment almost along the crystal a-axis. On the other hand, in the study using the YBCO device clear changes in the generated magnetic field distribution could be detected corresponding to the current direction.