Influence of Eu3+ doping on the microstructure and nanoporous transformation of BaGa2O4 ceramics


Klym H. Kostiv Y. Kushnir O. Konuhova M. Kozlovskiy A.L. Popov A.I.
August 2025Springer

Journal of Materials Science
2025#60Issue 3012662 - 12672 pp.

This study investigates the evolution of the porous/nanoporous structure of BaGa2O4 ceramics upon doping with Eu3⁺ ions. It has been established that the introduction of Eu3+ leads to a redistribution of pore sizes, resulting in an overall increase in their average size. Analysis of scanning electron microscopy images using computational algorithms revealed that the average pore radius in undoped BaGa2O4 ceramics is 0.79 µm, whereas in doped samples, it increases by 11% to 0.88 µm. This indicates a modification of pore formation mechanisms under the influence of Eu3+ ions, likely associated with grain boundary mobility and densification processes during sintering. Investigation of nanopores using positron annihilation spectroscopy showed that nanopores with a size of 0.3 nm initially undergo agglomeration upon the introduction of a small amount of Eu3+, followed by fragmentation. However, at a high Eu3+ content re-agglomeration occurs. For nanopores with radii of 2–3 nm, expansion and agglomeration are observed with increasing Eu3⁺ concentration. The obtained results indicate a significant impact of Eu3+ doping on the microstructural characteristics of BaGa2O4, which may be crucial for controlling its physicochemical properties.



Text of the article Перейти на текст статьи

Lviv Polytechnic National University, 12 Bandera Str, Lviv, 79013, Ukraine
Ivan Franko National University of Lviv, 50, Dragomanova Str, Lviv, 79005, Ukraine
Institute of Solid State Physics, University of Latvia, Kengaraga 8, Riga, LV-1063, Latvia
Engineering Profile Laboratory, L.N. Gumilyov, Eurasian National University, Astana, 010008, Kazakhstan
Laboratory of Solid State Physics, Institute of Nuclear Physics, Almaty, 050032, Kazakhstan

Lviv Polytechnic National University
Ivan Franko National University of Lviv
Institute of Solid State Physics
Engineering Profile Laboratory
Laboratory of Solid State Physics

10 лет помогаем публиковать статьи Международный издатель

Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026