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Preparation, characterization and oxide ion conductivity in U-substituted Bi4V2O11

โœ Scribed by O. Thery; R.N. Vannier; C. Dion; F. Abraham

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
541 KB
Volume
90
Category
Article
ISSN
0167-2738

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โœฆ Synopsis

A Bi2V,-,-vUxBiy05.~+0.5x-y solid solution derived from Bi,V,O, , has been prepared and characterized with x up to 0.125 for y = b. Partial substitution of Uhf for V" in Bi,V,O, , leads to the stabilization at room temperature of the high-oxide ion conducting y-phase, in contrast with other M6+ dopants which stabilize the /?-phase. The lower conductivity in U substituted system compared with BICUVOX.10 is attributed to its higher activation energy. Conductivity values and activation energies of the U substituted phases compare well with Bi,UO,.

๐Ÿ“œ SIMILAR VOLUMES

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The s~cture .f ~i.V~, I ~asist s ~f ~i20~ laye~ inler]=v~ with V~O, ,h~. Dfffr th~al aa~]~,~s sho~a tn~e reve~blr pha~ Iran,ilion~ at 720. 840 ~nd t 150 ~ The cells of the low I~peraturr fo~s derive from the high lem~t a~ tetmg~al cell ~dumi~ty alr these Imnsiti~s and reveal t~ fuaher on~ al 920 and

Preparation and Characterization of a Ne
Preparation and Characterization of a New Triclinic Compound Bi3.5V1.2O8.25 to Show the Known Phase Bi4V2O11 to Be Nonexistent as a Single Phase
โœ Akiteru Watanabe ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 365 KB

A new compound, Bi 3.5 V 1.2 O 8.25 (25.53 mol% V 2 O 5 ), has been found in the system Bi 2 O 3 +V 2 O 5 . It crystallizes in the triclinic symmetry with a โ€ซุโ€ฌ 16.452(1) A > , b โ€ซุโ€ฌ 16.886(1) A > , c โ€ซุโ€ฌ 7.0914(7) A > , โ€ซุโ€ฌ 91.330(8)3, โ€ซุโ€ฌ 95.186(9)3, โ€ซุโ€ฌ 96.031(9)3, and Z โ€ซุโ€ฌ 10. The structure is