Электронный каталог

Статья

Matovic, B.
High-Pressure Behavior of High-Entropy A&sub(2)B&sub(2)O&sub(7) Pyrochlore / B.Matovic, N.M.Belozerova, D.P.Kozlenko, I.Yu.Zel, [et al.] // Ceramics International [Electronic resource]. – 2024. – Vol. 50, No. 24, Pt. A. – P. 52649-52654. – URL: https://doi.org/10.1016/j.ceramint.2024.10.116. – Bibliogr.:.

A single high-entropy pyrochlore-type compound (A&sub(2)B&sub(2)O&sub(7) )was successfully synthesized, incorporating 8 different rare-earth cations at the A site and 2 different metal cations at the B site in equiatomic amounts [(8A&sub(1/8)&sub(2)(2B&sub(1/2))&sub(2)O&sub(7)]. Powders with a nominal composition of (La&sub(1/8)Sm&sub(1/8)Nd&sub(1/8)Pr&sub(1/8)Y&sub(1/8)Gd&sub(1/8)Dy&sub(1/8)Yb&sub(1/8))&sub(2)(Hf&sub(1/2)Zr&sub(1/2))&sub(2)O&sub(7) were fabricated by glycine nitrate procedure (GNP). The GNP process yielded powders with low crystallinity and after subsequent calcination, a well crystalline ceramic powders were formed. The phase evolution was initially analyzed using X-ray diffraction (XRD). In situ high-pressure X-ray diffraction was employed to investigate the structural stability and high-pressure behavior of the A&sub(2)B&sub(2)O&sub(7) pyrochlore up to 25.8 GPa. Theoretical investigations of the high-entropy pyrochlore systems were performed and showed good agreement with the experimentally obtained results.



Спец.(статьи,препринты) = С 44 в - Новые химические реакции, соединения и реактивы
Спец.(статьи,препринты) = С 332.8 - Синхротронное излучение. Лазеры на свободных электронах. Получение и использование рентгеновских лучей
ОИЯИ = ОИЯИ (JINR)2024
Бюллетени = 4/025