Journal of Siberian Federal University. Chemistry / Synthesis and Stability of Ruddlesden-Popper Phases (Sr0.8Ln0.2)3Co2O7-δ (Ln=Sm, Gd, Dy)

Full text (.pdf)
Issue
Journal of Siberian Federal University. Chemistry. 2024 17 (2)
Authors
Vereshchagin, Sergey N.; Dudnikov, Vyacheslav A.; Nasluzov, Vladimir A.; Solovyov, Leonid A.
Contact information
Vereshchagin, Sergey N.: Institute of Chemistry and Chemical Technology SB RAS Federal Research Center “Krasnoyarsk Scientific Center SB RAS” Krasnoyarsk, Russian Federation; ; Dudnikov, Vyacheslav A.: Institute of Physics named after L. V. Kirensky, Federal Research Center “Krasnoyarsk Scientific Center SB RAS” Krasnoyarsk, Russian Federation; Nasluzov, Vladimir A.: Institute of Chemistry and Chemical Technology SB RAS Federal Research Center “Krasnoyarsk Scientific Center SB RAS” Krasnoyarsk, Russian Federation; Solovyov, Leonid A. : Institute of Chemistry and Chemical Technology SB RAS Federal Research Center “Krasnoyarsk Scientific Center SB RAS” Krasnoyarsk, Russian Federation
Keywords
perovskite; Ruddlesden-Popper phases; cobaltite; rare earth oxides
Abstract

The paper presents the results of a quantum chemical calculation of the stability of the Ruddlesden-Popper phase (Sr1-xGdx)3Co2O7-δ (RP2) depending on the distribution of Gd3+/Sr2+ cations and the presence of oxygen vacancies. It has been shown that at x<0.208 both Gd3+ cations and oxygen vacancies are localized in the perovskite layer, which leads to structure stabilization. New metastable RP2 phases of strontium- rare earth cobaltites with (Sr0.8Ln0.2)3Co2O7-δ composition (Ln=Sm, Gd, Dy) were synthesized and characterized, these phases being absent from the phase diagrams in air

Pages
279–288
EDN
HTXZVV
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/153019