DPG Phi
Verhandlungen
Verhandlungen
DPG

Dresden 2006 – scientific programme

Parts | Days | Selection | Search | Downloads | Help

TT: Tiefe Temperaturen

TT 7: Superconductivity & Solids At Low Temperature - Poster Session

TT 7.9: Poster

Monday, March 27, 2006, 14:00–17:45, P1

Effect of impurity additions on the superconducting properties of in situ-processed MgB2 — •Marko Herrmann1, Margitta Schubert1, Wolfgang Häßler1, Bernhard Holzapfel1, and Ludwig Schultz1,21IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany — 2Dresden University of Technology, Department of Physics, Institute for Physics of Solids, D-01062 Dresden, Germany

The MgB2 powder was prepared by mechanical alloying of Mg, amorphous Boron and the additive. For studying the influence of the additive on the superconducting properties its amount was varied up to 20 m-%. Single elements as carbon as well as compounds like SiC were used as dopants. The result of the milling process was a partially reacted nanosized precursor powder with a high reactivity which was hot pressed to bulk samples. Starting from the undoped MgB2 with a critical temperature of 36 K and best current densities of 10 kA/cm2 at 7.5 K and 4 T, the changes of the superconducting properties with the kind and amount of additive are described in detail.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2006 > Dresden