Results of X-ray diffraction studies on glasses in the AgI-Ag,O-V,O, system are presented. In these glasses, the vanadium atom adopted five-fold coordination of oxygen atoms more frequently than four-fold and six-fold and the V-O distances lay between 1.76 and 1.79 A. The VO, polyhedra in the glasse
The structure of AgI-Ag2O-V2O5 glasses
✍ Scribed by H. Takahashi; Y. Hiki; T. Sakuma; Y. Morii
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 328 KB
- Volume
- 90
- Category
- Article
- ISSN
- 0167-2738
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✦ Synopsis
Structures of lOAgI-3Ag,O-2V,O,, 3AgI-3Ag,O-2V,O, and 2AgI-2Ag,O-V,O, glasses have been investigated by neutron diffraction experiments. The characteristic features of observed structure factors S(Q) in lOAgI-3Ag,O-2V,O, glass is similar to those of other superionic conducting glasses and molten AgI. From the standpoint of the pair distribution functions, it is clarified that the Ag-I and I-I correlation strength and Ag-Ag correlation length increase with increasing AgI concentration. Observed results suggest that the local AgI structure accompanied by the re-arrangement of silver ions is formed with highly doped iodide ions.
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