Enhanced Relaxor Ferroelectricity in Eu-Doped SrBi 2 Ta 2 O 9 Ceramics
Abstract
Samples were prepared by a solid-state reaction. The synthesized compounds were polycrystalline, with a highly pure orthorhombic structure. The dielectric studies revealed a displacive character and first-order phase transition for all compounds. The SrBi2Ta2O9 ceramic was found to be a normal ferroelectric material. Nevertheless, partial substitution by Eu contributed to enhanced relaxor characteristics. Doping results in a lower Curie temperature, which improves the dielectric constant. The transition process from short- to long-range movements of the charge carriers was revealed by the electrical modulus. The latter revealed a broad semicircular arc at lower frequencies, mainly owing to insulating grain boundaries.
Fields of Study & Subjects
Ferroelectric and Piezoelectric Materials
Dielectric properties of ceramics
Solid-state spectroscopy and crystallography
Publication details
- Journal / source
- Integrated ferroelectrics
- Volume
- 242
- Issue
- 1
- Pages
- 133–143
- Publication date
- 2 January 2026
- Language
- EN