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Chris Fancher1 Christina Hoffman1 Arthur Schultz2 Wenduo Zhou1 Xiaoping Wang1

1, Oak Ridge National Laboratory, Oak Ridge, Tennessee, United States
2, Argonne National Laboratory, Argonne, Illinois, United States

Ferroelectric materials are found in many of the electronic devices that are indispensable in the modern world. While macroscopic polarization, displacement, and dielectric measurements provide vital information; the development of in operando capabilities has provided unrivaled insight into the structural response of ferroelectric materials to applied stimuli. The more recent development of time-resolved capabilities has enabled researchers to probe dynamic phenomena. In this paper, time-resolved neutron and X-ray scattering studies of the dynamics of polarization reversal in the (1-x)BaTiO3-xBiZnO.5TiO.5O3 system and work identifying the mechanism of polarization reorientation in molecular ferroelectrics are presented. Diffraction results evidence that chemical modification of BaTiO3 activates an alternative pathway for 180 degrees dipole reversal. Molecular ferroelectrics have been hypothesized to involve proton transfer when the polarization is switched, limiting the use of X-ray tools. In contrast, neutron scattering is sensitive to hydrogen, enabling the investigate of the role of proton transfer in polarization reorientation.

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