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Lead-free piezoelectric ceramics have attracted considerable attention from researchers because of the absence of lead pollution.Li-doping BNT-based lead-free piezoelectric ceramics,Bi0.5(Na0.825K0.175)0.5TiO3,(Bi0.5Na0.5)0.94Ba0.06TiO3,0.894Bi0.5Na0.5TiO3-0.064Bi0.5K0.5TiO3-0.042BaTiO3 were fabricated by conventional electric ceramics processes.