Thermal conductivity properties of Bi2-alpha Tl alpha Sr2Ca2Cu3O10+z glass-ceramic HTc superconductor rods

Aksan M. A., YAKINCI M., BALCI Y., ATES H.

JOURNAL OF LOW TEMPERATURE PHYSICS, cilt.117, ss.957-961, 1999 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 117
  • Basım Tarihi: 1999
  • Doi Numarası: 10.1023/a:1022571428594
  • Dergi Adı: JOURNAL OF LOW TEMPERATURE PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.957-961
  • İnönü Üniversitesi Adresli: Evet

Özet

The Glass rods with nominal composition of (Bi2-alphaTlalpha)Sr(2)Ca(2)Cu3O(10+z) where alpha = 0.15, 0.25 and 0.35 have been prepared by melt casting technique. Preferably c-axis oriented grains were grown after the sintering process. The thermal conductivity kappa(T) measurements were performed between 30K and 290K and calculations were mad: using Wiedemann-Franz law. The kappa(T) values of the samples varied between 3.8 to 8.3 mW/cm.K and showed strong dependence to the heating temperatures and compositions. The best T-c and T-zero were obtained to be 122 K and 115 K respectively.