Effect of excess of bismuth doping on dielectric and ferroelectric properties of BaBi4Ti4O15 ceramics

Structure and electrical properties of Eu-doped SrBi2Nb2O9 ceramics

“…They attributed a decrease in the Curie temperature to the lattice distortion, the electronic configuration, electronegativity and amount of Bi 3+ ions. Thus, in our case, random distribution of Eu 3+ ions between pseudo-perovskite (SrNb 2 O 7 ) and (Bi 2 O 2 ) layers may be the main reason for the observed relaxor behaviour of the sample SrBi 1.65 Eu 0.35 Nb 2 O 9 [1,24,25].…”

Effect of Bi2O3content on the microstructure and electrical properties of SrBi2Nb2O9piezoelectric ceramics

“…In order to determine the increased grain size, we polished and etched the surface of the samples, as shown in inset of Fig. 2(a) 19 As shown in Fig. 2, all ceramics have a high relative density r rd (>94%, Table 1) and the r rd value of the samples increases slightly with increasing Bi 2 O 3 content, which could be related to the sintering additive promoting of excess Bi 2 O 3 and the increased grain size: with increasing grain growth, the number of pores was found to decrease, which is benecial for promoting electrical properties.…”

Structural transformation in Mn-substituted Sr2Bi2Ta2TiO12 Aurivillius phase synthesized by hydrothermal method: A comparative study and dielectric properties

“…A conventional solid-state method is the most popular method applied in the preparation of the Aurivillius phase. However, the use of high-temperature sintering often results in the volatilization of Bi 3+ and oxidation of the Mn 3+ cation, leading to the formation of the impurity phase [13,19]. Therefore, the synthesis using a liquid-phase reaction medium such as the hydrothermal method likely favors the synthesis of the multiferroic Aurivillius phase at a low temperature.…”