Stable cubic crystal structures and optimized thermoelectric performance of SrTiO3-based ceramics driven by entropy engineering

A stable cubic phase remained by entropy engineering design with Ba, La and Nb doping. The optimized configurational entropy range, 9–10 J mol −1 K −1 , is found and helps to obtain good thermoelectric performance for Sr 0.9− x Ba x La 0.1 Ti 0.9 Nb 0.1 O 3− δ .