The varying temperature- and pressure-induced phase transition pathways in hybrid improper ferroelectric Sr₃Sn₂O₇.

IF 1.3 3区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Acta crystallographica Section B, Structural science, crystal engineering and materials Pub Date : 2025-06-01 Epub Date: 2025-04-14 DOI:10.1107/S2052520625002306

Evie Ladbrook, Jeremiah P Tidey, Fei Ting Huang, Sang Wook Cheong, Dominik Daisenberger, Mark R Warren, Mark S Senn

引用次数: 0

Abstract

A variable-temperature and pressure single-crystal diffraction study of hybrid improper ferroelectric Sr₃Sn₂O₇ is reported. In combination with symmetry analysis, we reveal that the application of pressure and temperature induce distinct phase transition pathways, driven by a differing response of the octahedral rotations to these stimuli. Contrary to what has been previously predicted, we observe the ferroelectric to paraelectric phase transition between 10.17(18) and 12.13(14) GPa, meaning the hybrid improper ferroelectric phase remains stable to significantly higher pressures than expected.

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异温异压铁电Sr3Sn2O7杂化相变路径的研究。

本文报道了异温异压杂化铁电Sr3Sn2O7单晶衍射的研究。结合对称性分析，我们揭示了压力和温度的应用诱导了不同的相变路径，这是由八面体旋转对这些刺激的不同响应驱动的。与之前的预测相反，我们观察到铁电相在10.17（18）和12.13(14)GPa之间从铁电相过渡到准电相，这意味着杂化铁电相在比预期更高的压力下保持稳定。

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

Acta crystallographica Section B, Structural science, crystal engineering and materials CHEMISTRY, MULTIDISCIPLINARYCRYSTALLOGRAPH-CRYSTALLOGRAPHY

CiteScore

3.60

自引率

5.30%

发文量

期刊介绍： Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials publishes scientific articles related to the structural science of compounds and materials in the widest sense. Knowledge of the arrangements of atoms, including their temporal variations and dependencies on temperature and pressure, is often the key to understanding physical and chemical phenomena and is crucial for the design of new materials and supramolecular devices. Acta Crystallographica B is the forum for the publication of such contributions. Scientific developments based on experimental studies as well as those based on theoretical approaches, including crystal-structure prediction, structure-property relations and the use of databases of crystal structures, are published.

The varying temperature- and pressure-induced phase transition pathways in hybrid improper ferroelectric Sr3Sn2O7.

Abstract

The varying temperature- and pressure-induced phase transition pathways in hybrid improper ferroelectric Sr₃Sn₂O₇.