Vortex ferroelectric domains

By A. Gruverman, Dong Wu, H. Fan, I. Vrejoiu, M. Alexe, Richard J. Harrison, James F. Scott. 2008

185 citations recorded by the source corpus.

We show experimental switching data on microscale capacitors of lead–zirconate–titanate (PZT), which reveal time-resolved domain behavior during switching on a 100 ns scale. For small circular capacitors, an unswitched domain remains in the center while complete switching is observed in square capacitors. The observed effect is attributed to the formation of a vortex domain during polarization switching in small circular capacitors. This dynamical behavior is modeled using the Landau–Lifshitz–Gilbert equations and found to be in agreement with experiment. This simulation implies rotational motion of polarization in the xy plane, a Heisenberg-like result supported by the recent model of Naumov and Fu (2007 Phys. Rev. Lett. 98 077603), although not directly measurable by the present quasi-static measurements.

Subfields: Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/53895a2d2b6be1f15e16ff1c73863b3f14287cc0

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In Electronic, Optical and Magnetic Materials

1. Ramamoorthy Ramesh
2. J. Scott
3. G. Catalán
4. J. Seidel

In Materials Chemistry

1. J. Scott
2. Ramamoorthy Ramesh
3. G. Catalán
4. J. Seidel
5. K. Rabe

Citations in the corpus

• Domain wall nanoelectronics (2012, background): “However, although vortices almost certainly appear as transients during switching (Naumov and Fu, 2007; Gruverman et al., 2008; Sene et al., 2009), it is difficult to observe static ferroelectric vortices, or even just closure structures, in conventional tetragonal ferroelectrics.”