@article{Ladbrook2025,
author = {Ladbrook, Evie and Tidey, Jeremiah P. and Huang, Fei-Ting and Cheong, Sang-Wook and Daisenberger, Dominik and Warren, Mark R. and Senn, Mark S.},
title = {The varying temperature- and pressure-induced phase transition pathways in hybrid improper ferroelectric Sr$_3$Sn$_2$O$_7$},
journal = {Acta Crystallographica Section B},
year = {2025},
volume = {81},
number = {3},
pages = {318-324},
url = {https://doi.org/10.1107/S2052520625002306},
abstract = {A variable-temperature and pressure single-crystal diffraction study of hybrid improper ferroelectric Sr${\sb 3}$Sn${\sb 2}$O${\sb 7}$ 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.},
keywords = {high-pressure crystallography, hybrid improper ferroelectricity, Ruddlesden–Popper},
}

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