Electronic Resource
Springer
Journal of thermal analysis and calorimetry
60 (2000), S. 683-689
ISSN:
1572-8943
Keywords:
DSC
;
heat capacity
;
mixed oxide TiO2-RuO2
;
RuO2
;
TiO2
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract DSC was used for heat capacity measurements of pure RuO2 in the temperature range from 300 to 1170 K of solid solutions corresponding to the compositions of (Ti1−x Rux )O2 (x ≤0.15 and x ≥0.85) and in the temperature range from 300 to 1550 K of pure TiO2. The analysis of experimental data obtained within ±2% of accuracy has shown that the characteristic temperatures representing the harmonic lattice vibrations do not strongly depend on the chemical composition x . It was demonstrated that non-harmonic heat capacity is strongly correlated to x. The existence of additional excess heat capacity was observed with the mixed oxide solid solution samples of low Ru content and explained by the defect formation model.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1010177306503
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