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| Description
| - Mixed oxides in the system CaO-SrO-Bi2O3-Nb2O5-Ta2O5 possess many extraordinary electric, magnetic and optical properties for which they are used in fabrication of various electronic components. To assess the thermodynamic stability and reactivity of these oxides under various conditions during their preparation, processing and operation, a complete set of consistent thermodynamic data, including heat capacity, entropy and enthalpy of formation, is necessary. This review brings a summary of our results focused on calorimetric determination of heat capacity, entropy end enthalpy of mixed oxides in the system CaO-SrO-Bi2O3-Nb2O5-Ta2O5. Temperature dependences of molar heat capacity in a broad temperature range were evaluated from the experimental heat capacity and relative enthalpy data. Molar entropies at T = 298.15 K were calculated from low temperature heat capacity measurements. Furthermore, the results of calorimetric measurements of the enthalpies of drop-solution in a sodium oxide-molybdenum oxide melt for several stoichiometric mixed oxides in the above mentioned system are reported from which the values of enthalpy of formation from constituent binary oxides were derived. Finally, some empirical estimation and correlation methods (the Neumann-Kopp's rule, entropy-volume correlation and electronegativity-differences method) for evaluation of thermodynamic data of mixed oxides are tested and assessed.
- Mixed oxides in the system CaO-SrO-Bi2O3-Nb2O5-Ta2O5 possess many extraordinary electric, magnetic and optical properties for which they are used in fabrication of various electronic components. To assess the thermodynamic stability and reactivity of these oxides under various conditions during their preparation, processing and operation, a complete set of consistent thermodynamic data, including heat capacity, entropy and enthalpy of formation, is necessary. This review brings a summary of our results focused on calorimetric determination of heat capacity, entropy end enthalpy of mixed oxides in the system CaO-SrO-Bi2O3-Nb2O5-Ta2O5. Temperature dependences of molar heat capacity in a broad temperature range were evaluated from the experimental heat capacity and relative enthalpy data. Molar entropies at T = 298.15 K were calculated from low temperature heat capacity measurements. Furthermore, the results of calorimetric measurements of the enthalpies of drop-solution in a sodium oxide-molybdenum oxide melt for several stoichiometric mixed oxides in the above mentioned system are reported from which the values of enthalpy of formation from constituent binary oxides were derived. Finally, some empirical estimation and correlation methods (the Neumann-Kopp's rule, entropy-volume correlation and electronegativity-differences method) for evaluation of thermodynamic data of mixed oxides are tested and assessed. (en)
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| Title
| - Calorimetric Determination of Heat Capacity, Entropy and Enthalpy of Mixed Oxides in the System CaO-SrO-Bi2O3-Nb2O5-Ta2O5
- Calorimetric Determination of Heat Capacity, Entropy and Enthalpy of Mixed Oxides in the System CaO-SrO-Bi2O3-Nb2O5-Ta2O5 (en)
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| skos:prefLabel
| - Calorimetric Determination of Heat Capacity, Entropy and Enthalpy of Mixed Oxides in the System CaO-SrO-Bi2O3-Nb2O5-Ta2O5
- Calorimetric Determination of Heat Capacity, Entropy and Enthalpy of Mixed Oxides in the System CaO-SrO-Bi2O3-Nb2O5-Ta2O5 (en)
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| skos:notation
| - RIV/60461373:22310/13:43895828!RIV14-MSM-22310___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - I, P(GAP108/10/1006), P(LM2011025), Z(MSM6046137302), Z(MSM6046137307)
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/60461373:22310/13:43895828
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Ta2O5; Nb2O5; Bi2O3; SrO; CaO; Mixed Oxides; Enthalpy; Entropy; Heat Capacity; Calorimetry (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...vEdiceCisloSvazku
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| http://linked.open...i/riv/nazevZdroje
| - Applications of Calorimetry in a Wide Context - Differential Scanning Calorimetry, Isothermal Titration Calorimetry and Microcalorimetry
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...v/pocetStranKnihy
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
| |
| http://linked.open...iv/tvurceVysledku
| - Růžička, Květoslav
- Svoboda, Pavel
- Leitner, Jindřich
- Sedmidubský, David
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| http://linked.open...n/vavai/riv/zamer
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| number of pages
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| http://bibframe.org/vocab/doi
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
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