Электронный каталог

Статья

Jabarov, S.H.
Study Defects Formation Mechanism in La&sub(1-x)Ba&sub(x)MnO&sub(3) Perovskite Manganite by Positron Annihilation Lifetime and Doppler Broadening Spectroscopy / S.H.Jabarov, S.F.Samadov, A.S.Abiyev, A.A.Sidorin, N.V.M.Trung, O.S.Orlov, B.Mauyey, M.N.Mirzayev, [et al.] // Solid State Ionics [Electronic resource]. – 2024. – Vol. 414. – P. 116640. – URL: https://doi.org/10.1016/j.ssi.2024.116640. – Bibliogr.: 52.

In this study, La&sub(1-x)Ba&sub(x)MnO&sub(3) (x = 0.03, 0.27, 0.5) solid solutions were synthesized, and their structure and defect incorporation processes were investigated. The investigations were conducted using XRD, Positron Annihilation Lifetime, and Doppler Broadening Spectroscopy methods. Depending on the La/Ba ratio, the mechanism of defect incorporation in these compounds was studied, and vacancies of La and Ba atoms in the structure were determined. Three lifetime components are observed in PALS investigations. An increase in x results in a decrease in all three lifetime components. The results indicate that an increase in x leads to the formation of 0D (anion and cation point vacancies) and 3D (lattice distortions and interplanar distances) defects in the structure. Doppler Broadening results reveal a decrease in open volume defects and the presence of cationic defects.



Спец.(статьи,препринты) = С 36 - Физика твердого тела$
Спец.(статьи,препринты) = С 332.8 - Синхротронное излучение. Лазеры на свободных электронах. Получение и использование рентгеновских лучей
Спец.(статьи,препринты) = С 350 - Приложения методов ядерной физики в смежных областях
ОИЯИ = ОИЯИ (JINR)2024
Бюллетени = 48/024