Relaxor behavior and dielectric properties of Ba1−xBi2x/3Zr0.15Ti0.85O3 solid solution

Effects of Bi2O3 additive on sintering process and dielectric, ferroelectric, and piezoelectric properties of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 lead-free piezoceramics

“…Analogous relaxor-like behavior has been observed in Bi-doped barium zirconium titanate (BZT) [32] as well as fine-grained BCZT ceramics Bi 2 O 3 addition in other systems such as BT and BZT has been investigated in details. Fathi and Khemakhem reported a ␥ value of 1.8 for the relaxor composition of Ba 1−x Bi 2x/3 Zr 0.15 Ti 0.85 O 3 with x = 0.125 [32].…”

“…Fathi and Khemakhem reported a ␥ value of 1.8 for the relaxor composition of Ba 1−x Bi 2x/3 Zr 0.15 Ti 0.85 O 3 with x = 0.125 [32]. A relaxor behavior has also been reported for Ba 1−x Bi x Zr 0.05 Ti 0.95 O 3 with x = 0.08 by Mahajan et al [31].…”

“…Mahajan et al observed a right-side shift in XRD patterns of Ba 1−x Bi x (Zr 0.05 Ti 0.95 )O 3 ceramics with x ≤ 0.04, but higher amounts of Bi 2 O 3 shifted the XRD peaks to lower angles [31]. However, many researchers reported that Bi 3+ cations more possibly enter the Asites of BT and BZT, resulting in lattice contraction and shifts of peaks to higher angles [32,33].…”

“…Bahri and Khemakhem studied the relaxor behavior of Bi doped BT [54] and BZT [32] ceramics. They stated that, since the A-sites of lead-free perovskites are not ferroelectrically active, higher doping rate is needed to get a relaxor behavior compared to B-site doping.…”

Effect of doping by bismuth on dielectric properties and relaxor behavior in the Ba 1−x Bi 2x/3 (Yb 0.5 Nb 0.5 ) 0.05 Ti 0.95 O 3 solid solution

“…This is, for example, the case of the recently reported study on Ba 0.8 Sr 0.2 TiO 3 [10], on Ba 1-x Bi 2x/3 Zr 0.15 Ti 0.85 O 3 [11] and on (Ba 1-x Ca x ) 1-3y/2 Bi y TiO 3 [12] which showed relaxor type properties. Other studies have focused on the effect of doping on the dielectric properties of the ferroelectric relaxor [13][14].…”