Results discussion:enhanced piezoelectricity Cluster size effect ② 1.10 a)C-0.00 b)C-0.00 0.15 (a) 0.00 0.04 0.10 0 -0.08 -0.12 0.75 0.16 0.05 0.24 0.36 1.50 0.50 5 (dC-0.04 0.00 0.0 0.5 10 2.0 03 (b) 0.4 0.00 -0.04 0.3 -0.08 0.12 (fC-0.50 0.2 -0.16 0.24 0.1 0.36 0.50 0.0 -1.0 0.5 0.0 0.5 1.0 [101 Poled,Zero Field Cp=0.5,bM=3,T=1.0,T.=3.0,a=2 Results & 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