METALLIC CONDUCTION IN THE CRYSTAL COMPOUNDS OF GRAPHITE
Tests were made on samples of graphite in which the preferred orientation of the carbon hexagon networks was so good that the results permit definite inferences about the behavior of single crystals, and in particular about the anisotropy of the electronic properties along the a and c axes of graphite. Also, tests were made on samples of graphite in which individual crystallitcs show excellent alignment of their a-axes parallel to a plane, and of the c-axis normal to it. It was found that because of the excellent alignment, these specimens could take up materials such as bromine, iodine monochloride, or potassium up to the limiting values characteristic of the most highly charged crystal compounds, with cracking due to uneven expansion of individual regions in the specimen. Data are presented on the relative change of resistance in a and c axis directions on forming crystal compounds of graphite. Comparisons were made of the resistivity of wellaligned graphite and its crystal compounds with that of iron, nickel, and aluminum. (J.H.M.)
- Research Organization:
- Imperial Coll. of Science and Tech., London
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-13-009164
- OSTI ID:
- 4291286
- Journal Information:
- Nature, Journal Name: Nature Vol. Vol: 183
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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