Synthesis, sinterability and ionic conductivity of nanocrystalline Pr-doped La2Mo2O9 fast oxide-ion conductors

Sinterability, reducibility, and electrical conductivity of fast oxide-ion conductors La1.8R0.2MoWO9 (R=Pr, Nd, Gd and Y)

“…All substituted compounds were prepared by solid-state reaction using high-purity La 2 [23], Nd:o87.5% [24], Gd:o25% [25] and Y:o15% [26]), the doping concentration sets as10 mol%. Stoichiometric quantities of oxide powders were mixed with distilled water for 8 h using zirconia balls as milling media in a polyethylene jar.…”

Sintering and densification behavior of pure and alkaline earth (Ba2+, Sr2+ and Ca2+) substituted La2Mo2O9

“…Influence of substitution on the sintering of La 2 Mo 2 O 9 has also been investigated by different groups of researchers. Subramania et al 18 have reported effect of Pr 3+ substitutions for La 3+ on sintering of La 2 Mo 2 O 9 . The maxima of densification peak for pure La 2 Mo 2 O 9 occur at 635 • C, decreases to 615 • C for La 1.3 Pr 0.7 Mo 2 O 9 composition.…”

Low-temperature impedance and dielectric relaxation of NiO nanocrystals

“…Oxide nanocrystals have shown many great potential applications including nanoelectronics, optoelectronic devices [1], humidity sensors [2], gas sensors [3], flat panel displays, field emitters [4], light emitting diode [5], and electrodes in solar cells [6], because of the significant quantum size effects as characterized by distinct electric conductivity and dielectric response from the bulk [7]. It is well known that almost all nanocrystals are strong getters of plenty of adsorption species such as water molecules which may have impacts on the total conductivity at small particle sizes.…”