Enhanced piezoelectric performance in Na0.5Bi4.5Ti4O15‐based bismuth‐layered ceramics by Nb/Mn doping modification. - Mo, Wen; Luo, Xin; Zhang, Yangyang; Niu, Huiyan; Fang, Ziyan; Hu, Liangwei; Liu, Kun; Li, Qifan; Chen, Yong; Shen, Meng (Journal of the American Ceramic Society, 2023)