Effects of MgO on the Electronic and Superconducting Properties in Succinic Acid (C4H6O4) Doped MgB2 Bulks

Agil H., Cicek O., Ertekin E., Motaman A., Hossain M. S. A., Dou S. X., ...Daha Fazla

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, cilt.26, sa.5, ss.1525-1529, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 26 Sayı: 5
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1007/s10948-012-1952-z
  • Dergi Adı: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1525-1529
  • Anahtar Kelimeler: MgB2 bulks, Succinic acid, Upper and irreversibility field, CRITICAL-CURRENT DENSITY, ENHANCEMENT, CARBON
  • Ankara Üniversitesi Adresli: Evet

Özet

In this paper, we report the doping effects of succinic acid, C4H6O4 (from 0 to 30 wt%) on the lattice parameter, critical temperature (T-c), critical current density (J(c)), upper critical field (H-c2), and irreversibility field (H-irr) in MgB2 superconductor. It was found that MgB2 doped with 10 wt% C4H6O4 and sintered at 900 degrees C exhibited excellent J(c) above 10(4) A cm(-2) at 5 K and 8 T. Impurity scattering due to C substitution, improved crystallinity and the least amount of MgO in 10 wt% doped sample improves J(c) very significantly. The MgO amount is rapidly increased in 20 and 30 wt% doped samples which causes a strong depression of J(c), H-c2, H-irr due to poor inter and intra-grain connectivity.