Features of synthetic approaches to the production of stannates with a pyrochlore structure and the study of their thermodynamic properties
М. А. Ryumin
2022Transactions of the Kоla Science Centre of RAS Series Engineering Sciences33 citationsDOIOpen Access PDF
Abstract
The paper discusses synthetic approaches to the preparation of compounds with a pyrochlore structure using the example of compounds of composition Ln2Sn2O7 (Ln = La–Lu). Optimal temperature-time schemes for synthesis of single-phase samples were established and crystallographic parameters of compounds were determined.Morphology of samples obtained at different conditions was determined. Heat capacity measured and calculated thermodynamic functions in a wide temperature range (2.5–1300 K).
Topics & Concepts
PyrochloreThermodynamicsMaterials sciencePhase (matter)Heat capacityAtmospheric temperature rangeMineralogyChemistryPhysicsOrganic chemistryNuclear materials and radiation effectsNuclear Materials and PropertiesRadioactive element chemistry and processing