Toward Intrinsic Ferroelectric Switching in Multiferroic BiFeO3

Eric Parsonnet, Yen Lin Huang, Tanay Gosavi, Alexander Qualls, Dmitri Nikonov, Chia Ching Lin, Ian Young, Jeffrey Bokor, Lane W. Martin, Ramamoorthy Ramesh

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Using pulsed ferroelectric measurements, we probe switching dynamics in multiferroic BiFeO3, revealing low-ns switching times and a clear pathway to sub-ns switching. Our data is well described by a nucleation and growth model, which accounts for the various timescales in the switching process, namely (1) the ferroelectric polarization switching (bound-charge) dynamics and (2) the RC-limited movement of free charge in the circuit. Our model shows good agreement with observed data and begins to bridge the gap between experiment and theory, indicating pathways to study ferroelectric switching on intrinsic timescales.

Original languageEnglish
Article number067601
JournalPhysical Review Letters
Volume125
Issue number6
DOIs
StatePublished - 7 Aug 2020

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