Characterization and dielectric properties of barium zirconium titanate prepared by solid state reaction and high energy ball milling processes

Barium zirconium titanate (BaZr 0.08 Ti 0.92 O 3 ) (BZT) ceramics have been prepared by solid state reaction and high energy ball milled (dry and wet) processes. X-ray diffraction has shown the presence of single phase with an orthorhombic structure at room temperature. Addition of Zr strongly influences the crystal structure and electrical properties of ceramics. Analysis of dielectric constant ( ∈ r ) and loss tangent (tan δ ) as a function of temperature shows that high energy ball milled BZT samples have higher dielectric constant ( ∈ r > 8,000) and low dielectric loss factor (tan δ ~ 0.087 %), as compared to that of solid state reacted one ( ∈ r