Results discussion:enhanced piezoelectricity Cluster size effect 0.7 (a) 0.6 0.2 (c) 0.06 -0-Be/5.0% 0.5 1.6 0.1 0.04 1.2 0.4 0.0 C>C 6 0.02 0.8 C<0 0.06 1.5 0.05 CC-0.15 0.4 0.00 0.04 0.400.450.500.550.600.65 0.03 2LFE/L 0.02 0.5 0.01 0.0 0.10.20.30.40.5 Poled,Zero Field C,=0.5,bw=3,T=1.0,T=3.0,a=2Results & discussion: enhanced piezoelectricity Cluster size effect Cluster size effect Poled, Zero Field C p=0.5, b M=3, T=1.0, T c=3.0, a=2