Crystal Structure and Oxide-Ion Diffusion of Nanocrystalline, Compositionally Homogeneous Ceria–Zirconia Ce0.5Zr0.5O2up to 1176 K

2012 ◽  
Vol 13 (2) ◽  
pp. 829-837 ◽  
Author(s):  
Masatomo Yashima ◽  
Tomohiro Sekikawa ◽  
Daisuke Sato ◽  
Hiromi Nakano ◽  
Kazuki Omoto
Keyword(s):  
Crystal Structure ◽  
Ion Diffusion ◽  
Oxide Ion

Direct evidence for two-dimensional oxide-ion diffusion in the hexagonal perovskite-related oxide Ba3MoNbO8.5−δ

2019 ◽  
Vol 7 (23) ◽  
pp. 13910-13916 ◽  
Author(s):  
Masatomo Yashima ◽  
Takafumi Tsujiguchi ◽  
Kotaro Fujii ◽  
Eiki Niwa ◽  
Shunta Nishioka ◽  
...  
Keyword(s):  
Direct Evidence ◽  
Two Dimensional ◽  
Ion Diffusion ◽  
Diffusion Paths ◽  
Oxide Ion

Experimentally visualized two-dimensional O2−–O2–O3– diffusion paths rotating around Ba cations in oxygen deficient Ba3MoNbO8.5−δat 1100 °C.

scholarly journals Crystal Structure of (Ba1-xLax)2In2O5+x and Its Oxide Ion Conductivity

2000 ◽  
Vol 68 (6) ◽  
pp. 531-533 ◽  
Author(s):  
Yoshiharu UCHIMOTO ◽  
Takeshi YAO ◽  
Hiromitsu TAKAGI ◽  
Toru INAGAKI ◽  
Hiroyuki YOSHIDA
Keyword(s):  
Crystal Structure ◽  
Ion Conductivity ◽  
Oxide Ion Conductivity ◽  
Oxide Ion

scholarly journals Preferred ion diffusion pathways and activation energies for Ag in the crystal structure of stephanite, Ag5SbS4

2009 ◽  
Vol 73 (1) ◽  
pp. 17-26 ◽  
Author(s):  
M. Leitl ◽  
A. Pfitzner ◽  
L. Bindi
Keyword(s):  
Crystal Structure ◽  
Electron Density ◽  
Structural Model ◽  
Careful Analysis ◽  
Type Locality ◽  
Two Dimensional ◽  
Ionic Conductors ◽  
Ion Diffusion ◽  
Unit Cell Parameters ◽  
Cell Parameters

The crystal structure of stephanite fromthe type locality, Freiberg District, Saxony, Germany, was refined in the space group Cmc21, up to a final R index of 0.0427. Unit-cell parameters are: a 7.8329(6) Å, b 12.458(1) Å, c 8.5272(7) Å, V 832.1(1) Å3; Z = 4. The previously reported structural model is confirmed, but a higher-precision refinement was achieved herein by the introduction of thirdorder non-harmonic Gram-Charlier tensors for one Ag atom. In the structure of stephanite, Sb forms isolated SbS3 pyramids, which typically occur in sulphosalts, and Ag occupies sites with coordination ranging fromtriangular to almost tetrahedral. Both the Sb–S and Ag–S bond distances closely match the values commonly observed in the structures of other Ag sulphosalts and sulphides.The use of non-harmonic parameters for Ag allowed a better description of the electron density related to Ag, which is usually difficult to refine in good ionic conductors. A careful analysis of the energy barriers between the Ag sites defines preferred ion-diffusion pathways within the crystal structure of stephanite. The diffusion of Ag ions occurs preferentially along the sites Ag1 and Ag2, giving rise to two-dimensional nets of Ag atoms in which the ion conduction probably takes place.

scholarly journals The crystal structure and electrical properties of the oxide ion conductor Ba3WNbO8.5

2018 ◽  
Vol 6 (13) ◽  
pp. 5290-5295 ◽  
Author(s):  
K. S. McCombie ◽  
E. J. Wildman ◽  
S. Fop ◽  
R. I. Smith ◽  
J. M. S. Skakle ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Electrical Properties ◽  
The Novel ◽  
Ion Conductor ◽  
Oxide Ion Conductor ◽  
Oxide Ion

The crystal structure of the novel oxide ion conductor Ba3WNbO8.5.

scholarly journals Effects of redox processes on oxide ion diffusion in Mg-Al-Fe-O solid solution single crystals.

1999 ◽  
Vol 46 (1) ◽  
pp. 36-47
Author(s):  
Hajime Haneda ◽  
Mitsumasa Isobe ◽  
Takamasa Ishigaki ◽  
Isao Sakaguchi ◽  
Noboru Ichinose
Keyword(s):  
Solid Solution ◽  
Single Crystals ◽  
Redox Processes ◽  
Ion Diffusion ◽  
Oxide Ion
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