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Thermodynamic studies of a polycrystalline sodium niobate (NaNbO3) under equilibrium conditions by the method of Knudsen effusion mass spectrometry (KEMS) were conducted in the temperature range 1250–1485K. The vaporization of pure Na2O(c) was investigated at temperatures of 900–1165K. Thermodynamic quantities of sublimation enthalpy, activity, and entropy were derived from the partial pressures of...
Thermodynamic studies of a single crystal lead titanate (PbTiO3) under equilibrium conditions by the method of Knudsen effusion mass spectrometry (KEMS) were conducted in the temperature range 950–1210K. The vaporization of pure PbO(c) was investigated at temperatures of 810–1040K. Thermodynamic quantities of sublimation enthalpy, activity, and entropy were derived from the partial pressures of gaseous...
This work includes very new experimental studies on pure NiSO4 with Differential Thermal Analysis (DTA), simultaneous Thermo Gravimetry (TG), and Dynamic Scanning Calorimetry (DSC). Literature only describes the decomposition of NiSO4, and all related multi-nary phase diagrams with nickel sulfate as a compound show a lack in data in the NiSO4-rich region. Indeed, our experiments demonstrate that NiSO...
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