Magnetic characterization of SiC doped bulk MgB 2 superconductor

Bumin D., Yanmaz E., Basoglu M., GENÇER A.

Journal of Superconductivity and Novel Magnetism, cilt.24, sa.1-2, ss.211-215, 2011 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 24 Sayı: 1-2
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1007/s10948-010-1048-6
  • Dergi Adı: Journal of Superconductivity and Novel Magnetism
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.211-215
  • Anahtar Kelimeler: AC susceptibility, Critical current density, Flux jumping, MgB 2, SiC doping, Superconductivity
  • Ankara Üniversitesi Adresli: Evet

Özet

Flux pinning is a very significant mechanism to improve critical current density in MgB 2 for many applications, such as developing the performance of wires and tapes. In this study, we have done a systematic study of SiC inclusions in the main matrix of MgB 2. Sample production in the form of MgB 2-x(SiC) x was carried out by using solid state reaction method (x = 0, 0.01, 0.02, 0.04, 0.06, 0.10) in the argon atmosphere. The structural and magnetic properties of the prepared samples were investigated. Structural characterization of samples was performed by the X-ray powder diffraction (XRD) technique and the Scanning Electron Microscopy (SEM) measurements. Magnetic properties were determined by M-H loops, magnetizationtemperature (M-T), and AC susceptibility measurements. The T c of the samples was determined by the M-T measurements while the J c is determined through the M-H measurements. SiC inclusions up to some ratios (x = 0.06) increase the critical current density by up to about 50%, while the critical temperature T c remains unchanged in compatible with the literature. © Springer Science+Business Media, LLC 2010.