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(1 –  x )[0.50Ba(Zr 0.20 Ti 0.80 )O 3 –0.50(Ba 0.70 Ca 0.30 )TiO 3 ] –  x Bi 0.50 Li 0.50 TiO 3  with  x  = 0, 0.02, 0.04, 0.06, 0.08 and 0.10 wt.% were prepared by a solid-state reaction method. The phase structure, microstructure, dielectric, ferroelectric and energy density properties of BZT–BCT– x BLT ceramics were investigated. The phase structure of the samples showed coexist phases between orthorhombic and tetragonal morphotropic phase boundary (MPB). The grain size morphology decreased with increased of  x (BLT) contents. The diffuseness coefficient ( γ ) of ceramics are between 1.40 and 1.68, which showed the relaxor ferroelectric behavior in all the samples. The dielectric constant  (ε r∼ 12,697) at 1 kHz can be improve with increased of  x (BLT) = 0.02 wt.%. The highest recoverable energy-storage density ( Wrec = 0.069 J/cm 3 ) with an excellent energy storage efficiency ( η  = 95.8%) under lower electric field of 20 kV/cm were found in the composition of  x  = 0.08 wt.%).

The Evolution of Phase, Microstructure and Electrical Properties of BZT–BCT–BLT Ceramic