AC Susceptibility of the YBa2Cu3O7 Coated Conductor in High Magnetic Fields |
| E. Seiler and L. Frolek
Institute of Electrical Engineering, Centre of Excellence CENG, Slovak Academy of Sciences, D'ubravská cesta 9, 841 04 Bratislava, Slovakia |
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| Received: 9 07 2007; |
| The AC susceptibility of the YBa2Cu3O7 coated conductor in the perpendicular applied AC magnetic field was investigated using an inductive experimental setup with a pair of coils connected in opposite. A harmonic homogeneous AC magnetic field was applied perpendicularly to the wide face of the YBa2Cu3O7 coated tape. Together with this AC field, a parallel background DC magnetic field up to 14 T was applied perpendicularly to the tape. The measurements were performed at several constant temperatures in the range 3-50 K. In the region of high background DC fields (8-14 T) no influence of the tape's ferromagnetic substrate was detected, despite of the low measurement temperatures employed. The estimate of the critical current density (jc) at 20 K and 14 T, based on the position of the imaginary AC susceptibility peak, gives the value jc=0.53 MA/cm2. |
| DOI: 10.12693/APhysPolA.113.379 PACS numbers: 84.71.Mn |