Thermoelectric power and thermal conductivity study of the Y3Ba5Cu8Ox system

AKSAN M. A., KIZILASLAN O., AKSAN E. N., YAKINCI M. C.

PHYSICA B-CONDENSED MATTER, cilt.407, sa.14, ss.2820-2824, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 407 Sayı: 14
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.physb.2012.04.035
  • Dergi Adı: PHYSICA B-CONDENSED MATTER
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2820-2824
  • İnönü Üniversitesi Adresli: Evet

Özet

In the present study, the effect of heat treatment conditions on the structural/microstructural, electrical and transport properties, such as thermoelectric power and thermal conductivity, of the Y-358 system was investigated. The Y-123 phase instead of Y-358 were obtained with heat treatments. XRD and SEM analyses showed that the best structural formation was obtained for the sample prepared at 900 degrees C for 24 h. All the samples exhibited the T-c value around 91 K. Positive S(T) value was obtained in all the samples. S(T) data was analyzed by "Two band model with linear T-term". In thermal conductivity of the samples, small peak with broad maximum was found just below T-c, unlike that of the HTc cuprates. (c) 2012 Elsevier B.V. All rights reserved.