Электронный каталог

Статья

Asadov, A.G.
The Effects of High Pressure on the Crystal Structure and Vibration Spectra of Layered Perovskite-Like Nd&sub(2)Ti&sub(2)O&sub(7) / A.G.Asadov, A.I.Mammadov, D.P.Kozlenko, R.Z.Mehdiyeva, S.E.Kichanov, E.V.Lukin, O.N.Lis // Solid State Ionics [Electronic resource]. – 2024. – Vol. 406. – P. 116447. – URL: https://doi.org/10.1016/j.ssi.2023.116447. – Bibliogr.: 29.

We had investigated the pressure-induced phase transition phenomenon in the perovskite-like material Nd&sub(2)Ti&sub(2)O&sub(7) compound. The structural and vibrational properties of a layered have been studied by means of X-ray diffraction and Raman spectroscopy at pressures up to 30 GPa. The gradual structural phase transition from theinitial monoclinic P2&sub(1) (C*2&sub(2)) phase to the monoclinic P&sub(2) (C*1&sub(2)) phase was observed at P ~ 19 GPa. This pressure-induced phase transition is accompanied by anomalies in the pressure behavior of unit cell parameters and vibrational modes. The role of pressure application as a trigger for a significant rotation of the TiO&sub(6) octahedra,alterations in interatomic distances, and the displacement of Nd atoms were discussed.



Спец.(статьи,препринты) = С 332.8 - Синхротронное излучение. Лазеры на свободных электронах. Получение и использование рентгеновских лучей
Спец.(статьи,препринты) = С 342 г1 - Замедление и диффузия нейтронов. Дифракция
ОИЯИ = ОИЯИ (JINR)2024
Бюллетени = 22/024