Low-temperature synthesis under low oxygen pressure and thermodynamic properties of YbFe2O4-δ

Low-temperature synthesis under low oxygen pressure and thermodynamic properties of YbFe2O4-δ

The mixed-valence compound YbFe2O4-d was synthesized using a modified method that allows employing gaseous atmosphere with a controlled ratio of inert gas and oxygen. The stability range for YbFe2O4-d was determined at 1090 °C under reducing conditions. Thermodynamic characteristics for the formatio...

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Bibliographic Details
Main Authors: L. B. Vedmid', V. M. Dimitrov, O. M. Fedorova
Format: Article
Language:English
Published: Uralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. Elʹcina 2018-05-01
Series:Chimica Techno Acta
Subjects:
oxygen partial pressure
mixed valency
thermodynamic properties of complex oxides
oxygen non-stoichiometry
Online Access:https://journals.urfu.ru/index.php/chimtech/article/view/2715
Description
Summary:The mixed-valence compound YbFe2O4-d was synthesized using a modified method that allows employing gaseous atmosphere with a controlled ratio of inert gas and oxygen. The stability range for YbFe2O4-d was determined at 1090 °C under reducing conditions. Thermodynamic characteristics for the formation of  YbFe2O4-d from the simple oxides and from elements in the temperature range 700-910 °C have been calculated. The obtained results allow specifying the low-temperature part of Р-Т-Х diagram for the Yb-Fe-O system.
ISSN:2409-5613
2411-1414

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