| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1818234 | Physica C: Superconductivity and its Applications | 2012 | 4 Pages |
The temperature and external AC magnetic field dependence of AC magnetization losses of MgB2 wires were studied. Temperature was varied from 18 K to 40 K and external magnetic field of frequencies 72 Hz and 144 Hz from 8 mT to 70 mT with orientation perpendicular to the wire axis. To clarify the influence of the wire construction on AC loss, single and six filament untwisted samples of length ∼50 mm were examined. For this purpose unique experimental apparatus created by the combination of original calibration-free measuring system designed for ac magnetization loss measurement and non-magnetic vacuum vessel with two-stage cryocooler for sample cooling was used. It was found, that for monofilament sample hysteretic AC losses was dominated in comparison to untwisted six-filaments sample, where coupling losses confirmed by frequency dependence were dominated.
► The temperature dependence of AC magnetization losses of MgB2 wires were studied. ► Temperature was varied from 18 K to 40 K. ► The dependence of MgB2 AC magnetization losses on external AC magnetic field. ► External magnetic field was changed from 8 mT to 70 mT. ► Loss of mono and six-filamentary samples was compared.
