Pulsed domain wall spatial analysis. On-field FerroBOT piezoresponse images with pulse magnitudes of (a) −2.5 V, (b)
−3.5 V, and (c) −4.5 V analyzed for domain-wall motion per pulse. Superimposed scatter plot shows location of domain wall after previous pulse was applied; color scale indicates length of travel (black and gray indicate initial domain wall location and final, metastable domain wall location, respectively).
−3.5 V, and (c) −4.5 V analyzed for domain-wall motion per pulse. Superimposed scatter plot shows location of domain wall after previous pulse was applied; color scale indicates length of travel (black and gray indicate initial domain wall location and final, metastable domain wall location, respectively).
Scientific Achievement
An automated scanning probe microscopy (SPM) experimental platform, FerroBot, has been utilized to gain fundamental insights into ferroelectric switching behavior.
Significance and Impact
This automated approach can be employed to access metastable phases with dynamic properties, enabling characterization of time dependent functionalities.
Research Details
- The dynamics of domain walls between superdomain bundles in the polydomain ferroelectric Pb0.6Sr0.4TiO3 have been quantified.
- Domain wall bending is separated from irreversible domain reconfigurations using automated SPM.
This technique can be broadly applied to other complex ferroelectric systems to quantify dynamic properties.
K. P. Kelley, Y. Ren, A. Dasgupta, P. Kavle, S. Jesse, R. K. Vasudevan, Y. Cao, L. W. Martin, and S. V. Kalinin, "Probing Metastable Domain Dynamics via Automated Experimentation in Piezoresponse Force Microscopy," ACS Nano, Accepted (2021). doi.org/10.1021/acsnano.1c05455
