@article{Luo2026, 
author = {Huijiadai Luo and Fangzhe Li and Jingxin Tian and Weiwei Zhang and Hua Ke},
title = {Enhanced in-plane ferroelectric polarizations with low in-plane leakage currents in Ca-doped SrBi2Ta2O9 textured ceramics},
year = {2026},
journal = {Journal of Advanced Ceramics},
keywords = {textured SrBi2Ta2O9 ceramics, ferroelectric remnant polarization, Ca doping, in-plane leakage current, first-principles calculations},
url = {https://www.sciopen.com/article/10.26599/JAC.2026.9221344},
doi = {10.26599/JAC.2026.9221344},
abstract = {The Aurivillius-phase layered material SrBi2Ta2O9 possesses an extremely low leakage current (~10−9 A·cm−2) along the out-of-plane direction with in-plane ferroelectricity, which brings difficulties in achieving high ferroelectric performance and low leakage current simultaneously in randomly oriented ceramics. Here, highly textured SrBi2Ta2O9 ceramics with a texture degree of f = 0.985 are prepared using templated grain growth (TGG) technology with a tape-casting method. The in-plane remnant polarization achieves 15.83 μC·cm−2, which is increased by 197% compared with that of the SrBi2Ta2O9 randomly oriented ceramic. Doping Ca is found to reduce the in-plane leakage current density to J = 5.924×10−7 A·cm−2, which is attributed to the increased electronic band gap. This research presents an effective route for developing high-performance SrBi2Ta2O9-based ferroelectric devices.}
}