The structural mechanisms of pressure-induced phase transitions in the Carpy-Galy phase layered perovskites

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2024-08-26 DOI:10.1016/j.solidstatesciences.2024.107676

A.G. Asadov , D.P. Kozlenko , A.I. Mammadov , R.Z. Mehdiyeva , E.V. Lukin , S.E. Kichanov

引用次数: 0

Abstract

In layered perovskites with the Carpy-Galy structural type, similar structural phase transitions occur under high pressure. These structural changes, which are crucial for the pressure-induced phase transition in layered perovskite, were analyzed based on experimental X-ray diffraction data. The tilting of the Ti-O₆ octahedra and the distortion of the arrangement of rare-earth atoms were studied in detail. Changes in these structural features in layered perovskite serve as common indicators of the phase transition to the monoclinic phase that occurs under high pressure application.

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Carpy-Galy 相层状过氧化物中压力诱导相变的结构机制

在具有 Carpy-Galy 结构类型的层状过氧化物中，高压下也会发生类似的结构相变。根据 X 射线衍射实验数据分析了这些结构变化，它们对于层状过氧化物的压力诱导相变至关重要。详细研究了 Ti-O6 八面体的倾斜和稀土原子排列的扭曲。层状闪锌矿中这些结构特征的变化是高压作用下发生单斜相转变的常见指标。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

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