Abstract
For practical application of HTSC tapes as current leads, their behavior in realistic conditions, in the presence of magnetic field, becomes crucially important. We have investigated in detail the resistivity transition and the excess resistivity induced by low magnetic fields (1-750 Oe) in highly aligned composite structures of Bi(2223) based tapes and also, for comparison, in bulk ceramics of the same composition. We demonstrate the strong dependence of the electrical and magnetic properties on the microstructure of the composite ceramics. We observed also a dependence of the energy dissipation on the direction of the transport current with respect to the grain orientation. Percolation theory and the effective medium approximation are applied to analyze the anisotropy in the resistive transition of these systems.
| Original language | English |
|---|---|
| Pages (from-to) | 960-962 |
| Number of pages | 3 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 372-376 |
| Issue number | PART 2 |
| DOIs | |
| State | Published - Aug 2002 |
Bibliographical note
Funding Information:This work was supported partly by the US–Israel Binational Science Foundation (BSF) and by the KAMEA fellowship program of the Ministry of Absorption of the State of Israel.
Funding
This work was supported partly by the US–Israel Binational Science Foundation (BSF) and by the KAMEA fellowship program of the Ministry of Absorption of the State of Israel.
| Funders | Funder number |
|---|---|
| Ministry of Absorption of the State of Israel | |
| US-Israel Binational Science Foundation | |
| Bloom's Syndrome Foundation |
Keywords
- Bi(2223) tape
- Effective medium approximation
- Low magnetic fields
- Resistive transition