| Autor: |
Fomina, L., Neuimin, A., Pal'guev, S., Vakarin, S., Plaksin, S. |
| Zdroj: |
Inorganic Materials; September 2001, Vol. 37 Issue: 9 p979-980, 2p |
| Abstrakt: |
The phase composition of NaxMxTi8 – xO16(M = Al, Ga, In) materials was studied by x-ray diffraction. In the Al system, a hollandite phase was obtained in the composition range 0.67 ≤ x≤ 2.0. The results are interpreted in terms of Goldschmidt's tolerance factor. It is shown that A2B8O16compounds with the hollandite or NaxTiO2-type structure are more difficult to prepare at smaller ionic radii of M. The assumption is made that the monoclinic NaxTiO2-type phase may, under certain conditions, have a channel structure. |
| Databáze: |
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