Scanning Hall Probe Microscopy on Laser Striated Multifilament Coated Conductor

作者：Li Xiao Fen^*; Ben Yahia Anis; Majkic Goran; Selvamanickam Venkat

来源：IEEE Transactions on Applied Superconductivity, 2015, 25(3): 9000404.

DOI：10.1109/TASC.2014.2369819

• Coated conductor (CC)
• critical current density
• laser striation
• scanning Hall probe microscope (SHPM)
• trapped field

A 12-filament laser striated coated conductor is studied using Scanning Hall Probe Microscopy (SHPM). Remanent field is measured and critical current density distribution is calculated according to the measured field map. The results show that the SHPM technique is very sensitive to defects. A point-like defect can be readily discerned in the magnetic field map, even when the drop in critical current density is small. We also found that the choice of a proper filter is important for obtaining accurate critical current density values, especially for the multifilament superconducting tapes.

• 出版日期2015-6