Powder in Tube Tapes (PIT)
For the preparation of long length superconductors the powder-in-tube (PIT) technology is widely used beginning with the low temperature superconductors NbTi and Nb3Sn. In our institute we have a long-time experience with BSCCO/Ag-tapes (the first high-temperature superconductors available in long length) prepared using this process.
The main focus of our current research is concentrated on the 40K-superconductor MgB2.
We are investigating the whole process starting from the precursor powder to bulk samples and wires or tapes. We have a fruitful cooperation on this topic with several other partners from Europe in the framework of the European project HIPERMAG.
Recent Publications
W.Häßler, C.Rodig, C.Fischer, B.Holzapfel, O.Perner, J.Eckert, K.Nenkov, G.Fuchs
“Low temperature preparation of MgB2 tapes using mechanically alloyed powder”
Supercond. Sci. Technol. 16 (2003), 28
C.Fischer, C.Rodig, W.Häßler, O.Perner, J.Eckert, K.Nenkov, G.Fuchs, H.Wendrock
“Preparation of MgB2 tapes using a nanocrystalline partially reacted precursor“
Appl. Phys. Lett. 83 (2003), 1803
L. Schultz, O. Perner, W. Haessler, C. Fischer, G. Fuchs, B. Holzapfel, J. Eckert
„Mechanically alloyed MgB2 superconductors: microstructure, tape formation and critical currents”
Journal of Metastable and Nanocrystalline Materials 24-25 (2005), 559
W. Häßler, B. Birajdar, M. Herrmann, O. Perner, W. Gruner, C. Rodig, M. Schubert, O. Eibl, B. Holzapfel, L. Schultz
„MgB2 bulk and tapes prepared by mechanical alloying: influence of the boron precursor“
Supercond. Sci. & Technol. 19 (2006), 512
O. Perner
"Supraleitung und Mikrostruktur in mechanisch legiertem Magnesiumdiborid"
Dissertation TU Dresden 2006
W. Häßler, M. Herrmann, B. Birajdar, C. Rodig, M. Schubert, B. Holzapfel, O. Eibl, L. Schultz
"Superconducting MgB2 tapes prepared using mechanically alloyed nanocrystalline precursor powder"
IEEE Trans. Supercond. 17 (2007), 2919
W. Gruner, M. Herrmann, A.Nilsson, H.Hermann, W. Häßler, B. Holzapfel
"Reactive nanostructured carbon as an effective doping agent for MgB2"
Supercond. Sci. & Technol. 20 (2007), 601
M.Herrmann, W.Häßler, C.Rodig, W.Gruner, B.Holzapfel, L.Schultz
“Touching the properties of NbTi by carbon doped tapes with mechanically alloyed MgB2“
Appl. Phys. Lett. 91 (2007), 082507