Электронный каталог

Статья

Khiem, L.H.
The Crystal and Magnetic Structure of the Cation-Disordered Perovskites LaCo&sub(0.5)Mn&sub(0.5)O&sub(3) and YCo&sub(0.5)Mn&sub(0.5)O&sub(3) / L.H.Khiem, S.E.Kichanov, O.N.Lis, N.T.Nguyen, E.V.Lukin, T.N.Vershinina, D.P.Kozlenko, N.O.Golosova, [a.o.]. – Text : electronic // International Journal of Modern Physics B. – 2025. – Vol. 39, No. 25. – P. 2550239. – URL: https://doi.org/10.1142/S021797922550239X. – Bibliogr.: 35.

The crystal and magnetic structures of LaCo&sub(0.5)Mn&sub(0.5)O&sub(3) and YCo&sub(0.5)Mn&sub(0.5)O&sub(3) perovskites were studied using neutron and X-ray powder diffraction techniques in the temperature range of 15–300K. The obtained structural data indicate a complete disorder of cobalt and manganese cations, resulting in an orthorhombic structure with the Pnma space group in both compounds. The temperature evolution of unit cell parameters, characteristic bond lengths and valence angles was studied for both compounds. Anomalies in the temperature behavior of the lattice parameters and oxygen octahedra distortions were observed. These anomalies are attributed to the formation of a ferromagnetic phase at T&sub(C)=76(1) K for YCo&sub(0.5)Mn&sub(0.5)O&sub(3) and at T&sub(C)=218(1)K for LaCo&sub(0.5)Mn&sub(0.5)O&sub(3).



ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 342 в - Прохождение гамма-квантов через вещество. Эффект Мессбауэра. Волны в периодических средах и средах типа Фибоначи
Спец.(статьи,препринты) = С 332.8 - Синхротронное излучение. Лазеры на свободных электронах. Получение и использование рентгеновских лучей