Campus Units
Materials Science and Engineering
Document Type
Article
Publication Date
2015
Journal or Book Title
Physical Review Applied
Volume
3
Issue
064018
First Page
1
Last Page
12
DOI
10.1103/PhysRevApplied.3.064018
Abstract
The evolution of ferroelectric domains in the lead-free Ba(Zr0.2Ti0.8)O3−x(Ba0.7Ca0.3)TiO3 (abbreviated as BZT−xBCT) piezoelectric ceramic is investigated in situ under an applied electric field using transmission electron microscopy (TEM). Poling-induced, reversible, transformation from a multidomain to a single-domain state is monitored for a large variety of compositions. For all studied materials, this transformation occurs with the appearance of an intermediate nanodomain state at moderate poling fields. According to our results, under high poling fields, a single-domain state vanishes and multiple domains reappear within the grains. Upon further cycling, switching between two different multidomain states occurs. For all BZT−xBCT compositions that we investigate, no sign of the electric-field-induced structural changes is detected using the selected area electron-diffraction (SAED) patterns, which are devoid of the reflection splitting or any detectable changes during electrical poling. The extrinsic contribution to the piezoelectric properties is found to dominate in the BZT−xBCT piezoceramic.
Copyright Owner
American Physical Society
Copyright Date
2015
Language
en
File Format
application/pdf
Recommended Citation
Zakozheva, M.; Schmitt, L.A.; Acosta, M. James; Guo, H.; Jo, W.; Schierholz, R.; Kleebe, H.J.; and Tan, Xiaoli, "Wide Compositional Range In Situ Electric Field Investigations on Lead-Free Ba(Zr0.2Ti0.8)O3−x(Ba0.7Ca0.3)TiO3 Piezoceramic" (2015). Materials Science and Engineering Publications. 213.
https://lib.dr.iastate.edu/mse_pubs/213
Comments
This article is from Physical Review Applied 3 (2015): 1, doi:10.1103/PhysRevApplied.3.064018. Posted with permission.