Mechanical Stresses and Giant Piezoresponse of the Surface of Textured K2Sr4Nb10O30 Ceramics
- Authors: Bunin M.A.1, Bunina O.A.1, Kuprina Y.A.1, Zav’yalov V.P.1
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Affiliations:
- Research Institute of Physics, Southern Federal University
- Issue: Vol 45, No 8 (2019)
- Pages: 843-846
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/208408
- DOI: https://doi.org/10.1134/S1063785019080194
- ID: 208408
Cite item
Abstract
Crystallographic characteristics of K2Sr4Nb10O30 ceramics have been compared to experimental data on the surface piezoresponse studied by method of scanning probe microscopy, which was used to estimate relative values of d33 piezomodulus. Depending on the orientation of a ceramic sample surface relative to the axis of texture, these values turned out to be 62 or 58 times greater than the moduli of isotropic samples. The observed giant piezoresponse of the ceramic surface can be explained by anisotropic deformation of the crystalline lattice under pressure during hot pressing. The role of domain boundaries and polar nanoregions is discussed.
About the authors
M. A. Bunin
Research Institute of Physics, Southern Federal University
Author for correspondence.
Email: bunin.m.a@gmail.com
Russian Federation, Rostov-on-Don, 344090
O. A. Bunina
Research Institute of Physics, Southern Federal University
Email: bunin.m.a@gmail.com
Russian Federation, Rostov-on-Don, 344090
Yu. A. Kuprina
Research Institute of Physics, Southern Federal University
Email: bunin.m.a@gmail.com
Russian Federation, Rostov-on-Don, 344090
V. P. Zav’yalov
Research Institute of Physics, Southern Federal University
Email: bunin.m.a@gmail.com
Russian Federation, Rostov-on-Don, 344090