First-principles calculation of influences of La-doping on electronic structures of KNN lead-free ceramics
Wang Ting1, 3, Fan Yan-Chen2, Xing Jie1, Xu Ze3, Li Geng3, Wang Ke3, †, Wu Jia-Gang1, Zhu Jian-Guo1, ‡
       

Structure diagram of (a) pure and (b) La-doped KNN.