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    Thermoelectric power and thermal conductivity study of the Y3Ba5Cu8Ox system
    (Elsevier, 2012) Aksan, M. A.; Kizilaslan, O.; Aksan, E. N.; Yakinci, M. E.
    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.