Structural, thermal and electrical properties of Ti4+ substituted Bi2O3 solid systems

Amorphous phases and composition dependence of piezoelectricity in BaTiO 3 –Bi 2 O 3 polar amorphous ceramics

“…appeared in the sintered composites [15]. The appearance of crystalline Bi 12 TiO 20 [16] and Bi 8.11 Ba 0.89 O 13.05 was also accompanied by the appearance of some amorphous phases indicated by the humps in the XRD peaks as shown in the inset. Because the x=0.667 sample exhibited the largest XRD hump [17], it was thought to have the highest amorphous content among the sintered BaTiO 3 -xBi 2 O 3 composites.…”

Influence of Ca2+ substitution on thermal, structural, and conductivity behavior of Bi1−xCaxFeO3−y (0.40 ≤ x ≤ 0.55)

“…The small values of activation energy indicate that conduction is mainly through the polaron hopping mechanism [22,36]. For temperature greater than 680°C, high values of activation energy indicate that major contribution is of ionic conductivity due to mass transportation [37]. High values of activation energy can also be explained due to more vacancy trapping or annihilation of oxygen vacancies (as discussed in thermal section) at higher temperatures.…”

Investigation of Structural and Electrical Properties of (Bi2O3)1-x-y(CeO2)x(Eu2O3)y Electrolytes for Solid Oxide Fuel Cells

“…Therefore, in order to preserve high conductivity properties of δ-Bi 2 O 3 , β-Bi 2 O 3 and γ-Bi 2 O 3 phases, bismuth oxide based electrolytes can be more stabilized by addition of rare earth elements such as Ho, Dy, Er, Tb, Tm, Eu, and Ce into pure Bi 2 O 3 [18][19][20][21]. Many of the researchers have investigated crystal structures, stabilities, and conductivities of the bismuth based binary [17,[22][23][24][25][26] and ternary [27][28][29][30]…”