The effects of Ba<sub>0.85</sub>Ca<sub>0.15</sub>Zr<sub>0.1</sub>Ti<sub>0.9</sub>O<sub>3</sub> addition on the phase, microstructure, and thermoelectric properties of Ca<sub>3</sub>Co<sub>4</sub>O<sub>9</sub> ceramics
Journal of Asian Ceramic Societies