Dissemin is shutting down on January 1st, 2025

Published in

American Physical Society, Physical review B, 17(77), 2008

DOI: 10.1103/physrevb.77.174501

Links

Tools

Export citation

Search in Google Scholar

Effects of C substitution on the pinning mechanism ofMgB2

Journal article published in 2008 by J. L. Wang ORCID, R. Zeng, J. H. Kim, L. Lu, S. X. Dou
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Green circle
Postprint: archiving allowed
Green circle
Published version: archiving allowed
Data provided by SHERPA/RoMEO

Abstract

The temperature and magnetic field of the critical current density of four selected pure and C-doped MgB2 samples have been investigated in detail and the flux pinning mechanism has been analyzed. It was found that the sintering temperature and the substitution of carbon can significantly modify the flux pinning mechanism. Below 30 K, the reduced field dependences of the reduced pinning force for all investigated samples were found to closely obey one scaling law, reflecting the presence of only one dominant pinning mechanism. A deltaTc pinning mechanism was found to be mainly responsible in pure MgB2 samples while the deltal pinning mechanism becomes dominant for C-doped samples.