Ionic conductivity, structural and thermal properties of pure and Sr2+ doped Y2Ti2O7 pyrochlores for SOFC

γ-Phase stabilized Bi4BaxV2−xO11−δ (0.0 ≤ x ≤ 0.20): Structural, thermal and conducting properties

“…The plot Z′ versus Z″ (Nyquist plot) for Bi 4 Ba x V 2 − x O 11 − δ with corresponding equivalent circuits at different temperature values, was obtained to calculate the resistance and capacitance of the samples. At lower temperatures, one semicircle appears which can be related to the bulk response of the material, the value of capacitance obtained from the relation ω max R b C b = 1 was~10 −11 F [33,34]. For intermediate temperatures~300-550°C a semicircle along with linear tail is observed which can be related to the diffusion processes [35][36][37][38][39].…”

Catalytic performance of bismuth pyromanganate nanocatalyst for Biginelli reactions

“…Pyrochlore materials with general formula A 2 B 2 X 7 in which A and B are cations and X is O 2or Fanions have found key applications in catalysis [1-4], electronics [5], optical and magnetic devices [6,7], and solid oxide fuel cell (SOFC) 5 electrode materials [8]. Bi-containing perovskites have received a lot of attention as lead-free ferroelectric [9,10] and multi-ferroic materials [11,12].…”

Differentiated Electric Behaviors of La2/3Cu3Ti4O12 Ceramics Prepared by Different Methods

“…The DSC curve shows a small exothermic peak about 750°C, which suggests the formation of LCTO above 750°C . The DSC curve shows the endothermic peaks at about 1033°C, which may be related to the formation of LCTO crystal structure, and the endothermic peak at about 1114°C, accompanied by small weight loss in the corresponding TG curve, may be related to the oxygen removing from LCTO‐SG crystal lattice . However, the DSC curve of LCTO‐SS raw material show the exothermic peak about 835°C and the endothermic peak about 1083°C, which are higher than 750°C, 1033°C of LCTO‐SG ceramics in Fig.…”