Magnetic field in the vicinity of BSCCO tapes carrying transport current

✍ Scribed by M. Polák; M. Majoroš; J. Kvitkovič; P. Kottman; P. Kováč; T. Melišek

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 259 KB
• Volume: 34
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/s0011-2275(05)80190-0

✦ Synopsis

Measurements of magnetic field components Bx,B ,B , produced by both shielding and transport currents in BS~CO~Ag tapes are presented. The measured sample BSCCO 2223 was prepared by the powder in tube technique and t~e se~f field critical current densities were of the order of 10 ~ A/cm ~ at 77 K. The shielding currents were induced by the external magnetic field perpendicular to the tape surface. The sample magnetic field was me~sure~ using 3 Hall probes with small active area (about 10 -~ mm ~ ) and sensitivity of the order of 10mV/T. They were fixed to a special holder so that they sense x,y and z component of the sample magnetic field at the distance ~ 0.5mm from the sample surface. The measured profiles provide information on the critical current density inhomogeneities along the sample as well as on the spatial and time distribution of both transport and magnetization currents.