Lattice dynamics of niobium carbide (NbC)
β Scribed by R.B. Yadav; K.C. Thakur
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 186 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0038-1098
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π SIMILAR VOLUMES
The vibrations of boron carbide B 13 C 2 have been studied by the valence force model. The 1560-cm Ψ1 band is ascribed to the antisymetric stretching of the linear chain, and thereby it is IR active only. Large angle-bending forces of the carbon atoms are estimated to agree with the experiment. This
The internal friction at low temperatures has been measured on polycrystalline samples of -B, B 4 C, B 13 C 2 , and B 9 C. As the carbon deficiency increases in the boron carbides, the internal friction approaches that of amorphous solids. For comparison, the internal friction of amorphous B 9 C, pr