Enhanced high‐temperature indentation fracture toughness of zirconia ceramics via HfO2 doping. - Lv, Yi‐Hang; Wang, Xin‐Gang; Wang, Xiao‐Fei; Wang, Ming; Xu, Jing‐Cheng; Lv, Song‐Ze; He, Tao; Jiang, Dan‐Yu (Journal of the American Ceramic Society, 2025)