Journal article

Authors list: Korte, C; Janek, J

Publication year: 1996

Pages: 425-432

Journal: Berichte der Bunsengesellschaft für physikalische Chemie

Volume number: 100

Issue number: 4

ISSN: 0005-9021

eISSN: 0005-9021

DOI Link: https://doi.org/10.1002/bbpc.19961000405

Publisher: Wiley

Abstract: 
Experiments on thermal demixing of beta-Ag2+deltaS (high-temperature phase) are reported. By means of a nonisothermal solid state galvanic cell, the redistribution of the metal excess delta in an external temperature gradient has been investigated in the temperature range 200 degrees C < T < 300 degrees C and for metal excesses 8.10(-4) < delta < 2.10(-3) From the results of the demixing experiments and from additional determinations of the relative molar partial entropy of silver in beta-Ag2+deltaS, the (reduced) heat of transport, Q(Ag)*, of silver has been evaluated. Q(Ag)* increases strongly with increasing temperature, and at a temperature of approximately 205 degrees C we observe a sign reversal of Q(Ag)*. The results support our previous conclusions from experiments on stationary thermal diffusion. A discussion of our experimental results for the heat of transport of the metal component, in respect to the properties of ions and electrons, is given.

Harvard Citation style: Korte, C. and Janek, J. (1996) Thermal diffusion in crystalline binary compounds with narrow ranges of homogeneity .3. Experimental study of the soret effect in beta-Ag2+delta S, Berichte der Bunsengesellschaft für physikalische Chemie, 100(4), pp. 425-432. https://doi.org/10.1002/bbpc.19961000405

APA Citation style: Korte, C., & Janek, J. (1996). Thermal diffusion in crystalline binary compounds with narrow ranges of homogeneity .3. Experimental study of the soret effect in beta-Ag2+delta S. Berichte der Bunsengesellschaft für physikalische Chemie. 100(4), 425-432. https://doi.org/10.1002/bbpc.19961000405