The formation process of the ternary AICI,-FeCI,-graphite intercalation compounds (GICs) was studied by using three different reaction paths at 150Β°C. In the reaction of stage I, FeCI,-GICs with AICI,, the exchange of intercalated FeCh for AICll occurred and, consequently, the formation of the "mixe
Electrical resistivity and Hall effect of K-FeCl3graphite intercalation compounds
β Scribed by O. El-Shazly; S. G. Tawfik; A. K. Ibrahim; I. H. Ibrahim; E. F. El-Wahidy
- Publisher
- Springer
- Year
- 1993
- Tongue
- English
- Weight
- 424 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0022-2461
No coin nor oath required. For personal study only.
β¦ Synopsis
Both in-plane as well as c-axis electrical resistivity of Stage 2 and Stage 5 K-FeCI 3 graphite intercalation compounds were measured from room temperature down to 12 K by using a standard four-probe method. The in-plane electrical resistivity exhibited a metallic behaviour. The c-axis resistivity exhibited an activated behaviour and the data were fitted to a model which assumes a variable-range hopping conduction in parallel with band conduction. The Hall effect was measured in a low magnetic field up to 5 kG at temperatures 300, 77 and 12 K: The Hall coefficient was found to be positive, indicating that the conduction takes place by holes. The carrier concentrations were calculated using a one-carrier model.
π SIMILAR VOLUMES
Stage 2 and 3 FeCl,-graphite intercalation compounds (GICs) and stage l-3 ICI-GICs are prepared by a two-bulb method. The stage structures of the GICs are studied by X-ray diffraction, and ihe\_GICs are characterized by the full width at half maximum of the (001) diffraciion peaks. The effective Deb
We present new chemical. crystallographic and electrical conductivity data concerning the title compounds. It is found that the ;\_' axis repeat distances of the bi-intercalation compounds (GBC) are almost identical to the sum of the interplanar distances of the associated binary compounds. The basa