Magnetic properties of neutron irradiated and doped MgB2 superconductors

U. P. Trociewitz, P. V.P.S.S. Sastry, A. Wyda, K. Crockett, J. Schwartz

Research output: Contribution to journalConference articlepeer-review

10 Scopus citations

Abstract

Studies on the effect of neutron irradiation on MgB2 superconductor showed a systematic lowering of Tc with increasing neutron fluence. The lower Tc made it difficult to observe the marginal enhancement of flux pinning properties in the neutron irradiated MgB2 powders. Partial substitution of Mg in MgB2 by Ti, V and Nb yielded pure samples up to 10 at.% doping level. These substitutions had no affect on Tc, which remained constant at 39 K. The effect of doping Mg by Ti, V, and Nb on the flux pinning properties of MgB2 was investigated by magnetization measurements. Comparison of the magnetization hysteresis loop widths of the undoped and doped samples showed that the V-doped powders had larger hysteresis loop widths compared to undoped samples indicating enhanced flux pinning in the V-doped samples compared to the undoped and Ti- and Nb-doped samples.

Original languageEnglish (US)
Pages (from-to)3320-3323
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume13
Issue number2 III
DOIs
StatePublished - Jun 2003
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: Aug 4 2002Aug 9 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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