TY - JOUR
T1 - Experimental determination of flexoelectric coefficients in SrTiO3, KTaO3, TiO2, and YAlO3 single crystals
AU - Mizzi, Christopher A.
AU - Guo, Binghao
AU - Marks, Laurence D.
N1 - Publisher Copyright:
© 2022 American Physical Society.
PY - 2022/5
Y1 - 2022/5
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevMaterials.6.055005
DO - 10.1103/PhysRevMaterials.6.055005
M3 - Article
AN - SCOPUS:85131372814
SN - 2475-9953
VL - 6
JO - Physical Review Materials
JF - Physical Review Materials
IS - 5
M1 - 055005
ER -