The complex dielectric functions of -rhombohedral boron, of boron carbide with compositions between B 4.23 C and B 10.37 C and YB 66 , were measured between about 2.5 and 9.5 eV. Similarities of the electronic structures probably due to the icosahedra are indicated by obvious qualitative similaritie
Unusual Properties of Icosahedral Boron-Rich Solids
β Scribed by David Emin
- Publisher
- John Wiley and Sons
- Year
- 2006
- Weight
- 8 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0931-7597
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π SIMILAR VOLUMES
Optical conductivities and dielectric functions derived from the IR-optical reflectivity spectra exhibit clear similarities between icosahedral boron-rich structures and Al-based isosahedral quasicyrstals. This suggests a close qualitative relationship of their electronic structures. Accordingly ico
For -rhombohedral boron and boron carbide, the hitherto best-investigated icoasahedral boron-rich solids, the concentrations of structural defects and electronic gap states are quantitatively correlated. In this way the theoretically determined valence electron de5ciencies are exactly compensated, a
Modulated photocurrent measurements were performed on amorphous boron, -rhombohedral boron, and Al-Pd-Re quasicrystal. For the quasicrystal, this is the first report on photoconductivity. The data obtained for amorphous boron are analyzed by a typical model which assumes interband photocarrier gener