The role of lattice dynamics in ferroelectric switching [* Cross-Reference *]

Version 1.0
Shi, Qiwu; Parsonnet, Eric; Cheng, Xiaoxing; Fedorova, Natalya; Peng, Ren Ci; Fernandez, Abel; Qualls, Alexander; Huang, Xiaoxi; Chang, Xue; Zhang, Hongrui; Pesquera, David; Das, Sujit; Nikonov, Dmitri; Young, Ian; Chen, Long Qing; Martin, Lane W.; Huang, Yen Lin; Íñiguez, Jorge; Ramesh, Ramamoorthy, 2026, "The role of lattice dynamics in ferroelectric switching [* Cross-Reference *]", https://lore.list.lu/citation?persistentId=perma:LIST.GTIDSQ, LIST Open Repository, V1
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Description
Reducing the switching energy of ferroelectric thin films remains an important goal in the pursuit of ultralow-power ferroelectric memory and logic devices. Here, we elucidate the fundamental role of lattice dynamics in ferroelectric switching by studying both freestanding bismuth ferrite (BiFeO3) membranes and films clamped to a substrate. We observe a distinct evolution of the ferroelectric domain pattern, from striped, 71° ferroelastic domains (spacing of ~100 nm) in clamped BiFeO3 films, to large (10’s of micrometers) 180° domains in freestanding films. By removing the constraints imposed by mechanical clamping from the substrate, we can realize a ~40% reduction of the switching voltage and a consequent ~60% improvement in the switching speed. Our findings highlight the importance of a dynamic clamping process occurring during switching, which impacts strain, ferroelectric, and ferrodistortive order parameters and plays a critical role in setting the energetics and dynamics of ferroelectric switching. (2022-12-01)
***This entry has been automatically imported via Infodoc(ASO) CSV by LIST harvest scripts. Please refer to https://doi.org/10.1038/s41467-022-28622-z for the original and latest version of the dataset and data downloads*** (2026-06-11)
Subject Physics
Keyword thin films remains, ultralow-power ferroelectric memory, ferroelectric thin films, logic devices, remains an important
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