Large strain with low hysteresis in Sn-modified Bi0.5(Na0.75K0.25)0.5TiO3 lead-free piezoceramics. - Xi, Hao; Yu, Lixiang; Qian, Hao; Chen, Fujun; Mao, Minmin; Liu, Yunfei; Lyu, Yinong (Journal of Materials Science, 2020)