Probing the Local Structure of CuO-Doped (Ba0.85Ca0.15)(Ti0.90Zr0.10)O3 Ceramics with XANES Spectroscopy Technique

This work aims to investigate the effects of CuO doping (0-1.0 wt%) on the local structure of (Ba0.85Ca0.15)(Ti0.90Zr0.10)O-3 (BCTZ) ceramics. These samples were prepared via the solid state combustion technique using glycine as fuel. The local structure of the samples was characterized by XANES (X-Ray Absorption Near-edge Structure) spectroscopy. The Cu, Ti K-edge and Ba L 3-edge XANES measurements were performed in a fluorescent mode at ambient temperature. The XANES data revealed that the oxidation state of Ba and Ti ions in all samples was +2 and +4, respectively. Comparing the experimental Cu K-edge XANES spectra to theoretical XANES spectra simulated by FEFF program suggested that the substitution of the Cu ions for B-site ions in BCTZ lattice.

Automated summary

This study investigates the effects of CuO doping on the local structure of BCTZ ceramics and reveals that Cu ions substitute B-site ions in the BCTZ lattice, as revealed by XANES spectroscopy.