Table 1: Comparison between bulk, bilayer and trilayer ME composite

Composite Geometry Lattice constant ME coefficient DC bias Bulk PZT (3.87 Å, = 4.07 Å) and NFM = 8.42 Å 110 mV/cm·Oe for PZT-20 NZF 900 Oe (T-T) mode Bilayer 200 mV/cm·Oe 800-900 Oe (T-T) mode Trilayer PZT (4.04 Å, = 4.11 Å) and NCZF = 8.41 Å 526 mV/cm·Oe (single layer PZT) And 787 mV/cm·Oe (multilayer PZT) 400 Oe(L-T) mode