Interplay of local polarization, ionic size, and octahedral tilt in SrTiO3-Na0.5Bi0.5TiO3
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Date
2024-01-01
Journal Title
Journal ISSN
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Publisher
American Physical Society (APS)
Abstract
We show that the ferroelectric system (1−x) SrTiO3−(x) Na0.5Bi0.5TiO3 exhibits an interesting interplay of local polarization, ionic size effect, and octahedral tilt. This interplay results in (i) a nonmonotonic composition dependence of the lattice volume at room temperature and (ii) existence of a unique temperature (300∘C) at which the competing effects of electrostriction caused by the formation of polar nanoregions and geometrical ionic size make the system exhibit composition independent lattice parameters in a large composition interval x<0.40. ©2024 American Physical Society.
Description
Keywords
Polarization, Antiferroelectric materials, Ionic composition, Ambient temperature, Ozone, Titanium, Ferroelectric materials
Citation
Sharma, D., Punetha, P., Das Adhikary, G., Avdeev, M., & Ranjan, R. (2024). Interplay of local polarization, ionic size, and octahedral tilt in SrTiO3-Na0.5 Bi0.5 Ti O3. Physical Review B, 109(1), 014107. doi.org/10.1103/PhysRevB.109.014107