Preparation and characterization of superconducting MgB2 rods by N. Orlinska, A. Zaleski, J. M. Paszula, and Z. Wokulski

Crystal Research and Technology

Cryst. Res. Technol. 42, 1266 (2007) - Abstract -

Preparation and characterization of superconducting MgB₂ rods

N. Orlinska, A. Zaleski*, J. M. Paszula**, and Z. Wokulski

Institute of Materials Science, University of Silesia, 12, Bankowa Str., 40-007 Katowice, Poland
*Institute of Low Temperature and Structure Research, 2, Okólna Str., 50-422 Wroclaw, Poland
**Faculty of Armament and Aviation Technology, Military University of Technology, 2, Kaliskiego Str., 00-908 Warsaw, Poland

Keywords	MgB2 rods, modified PIT technique, explosive consolidation method, AC susceptibility, critical current density
PACS	81.05.-t
DOI	10.1002/crat.200711016

Superconducting Cu/Fe/MgB₂ and Steel/Cu/MgB₂ rods were prepared through the ex-situ modified PIT technique with explosive consolidation method. The phase composition, microstructural features were investigated by X-ray diffraction and scanning electron microscope. The AC susceptibility for a core samples was measured by the AC susceptometry. Measurements of the magnetization hysteresis loops were also carried out. It is found that no impurity phase was formed in MgB2 rods. In addition, it was found that grains in both Cu/Fe/MgB₂ and Steel/Cu/MgB₂ rods are densely packed. The magnetic measurements show that the critical temperature of Cu/Fe/MgB₂ and Steel/Cu/MgB₂ rods is 37.7 K and 37.6 K, respectively. The high critical current density of 9.22 x 10⁵ A/cm² (4.1 K, 0.2 T) was obtained for Steel/Cu/MgB₂ rod.

If you have come directly to this page, click this symbol

to go to the CRT homepage.

The full text of this paper in pdf-Format is available at Wiley Interscience.