Experimental determination of flexoelectric coefficients in SrTiO3, KTaO3, TiO2, and YAlO3 single crystals

Christopher A. Mizzi, Binghao Guo, Laurence D. Marks*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We report experimental values for the flexoelectric responses of SrTiO3, KTaO3, TiO2, and YAlO3 single crystals using a three-point bending approach. We find all samples possess a linear flexoelectric response with effective short-circuit flexoelectric coefficients ∼|1-10|nC/m. Flexocoupling voltages computed from these measured effective flexoelectric coefficients are found to significantly vary across the investigated materials and refute the previous suggestions that they should be ∼|1-10| V. Importantly, we find that low dielectric constant materials can have large flexocoupling voltages exceeding nominal expectations.

Original languageEnglish (US)
Article number055005
JournalPhysical Review Materials
Volume6
Issue number5
DOIs
StatePublished - May 2022

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

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