Interband Transitions and Optical Phonons of B48Al3C2
作者： H. Werheit , R. Schmechel , F.D. Meyer , H. Hillebrecht
关键词: Molecular physics 、 Phonon 、 Crystallography 、 Absorption edge 、 Spectral line 、 Chemistry 、 Infrared spectroscopy 、 Icosahedral symmetry 、 Raman spectroscopy 、 Atom 、 Resonance (particle physics)
摘要: Abstract The optical absorption edge of B 48 Al 3 C 2 has been measured. It is decomposed into several interband transitions between 0.97 and 2.5 eV. Additionally, gap-state-related with energies 0.45 0.96 eV were determined. They are attributed to defects in the structure, whose character not yet known. spectra IR- Raman-active phonons their resonance frequencies presented. According other icosahedral boron-rich solids, can roughly be separated vibrations icosahedra those single atoms. tetrahedrally bonded Al1 atom discussed analogy tetrahedral XY 4 molecule.
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Helmut Werheit, Optical properties of the crystalline modifications of boron and boron-rich borides Progress in Crystal Growth and Characterization. ,vol. 16, pp. 179- 223 ,(1988) , 10.1016/0146-3535(88)90018-4
Iwami Higashi, Yasuo Takahashi, A ternary boron-rich phase Al1.00Cu0.79B25 grown from a molten AlCuB mixture Journal of the Less Common Metals. ,vol. 108, pp. 177- 188 ,(1985) , 10.1016/0022-5088(85)90441-2
R Schmechel, H Werheit, Correlation between structural defects and electronic properties of icosahedral boron-rich solids Journal of Physics: Condensed Matter. ,vol. 11, pp. 6803- 6813 ,(1999) , 10.1088/0953-8984/11/35/316
S. K. Kurtz, R. Bechmann, Roy F. S. Hearmon, Numerical data and functional relationships in science and technology Springer. ,(1969)
G. Lucovsky, On the photoionization of deep impurity centers in semiconductors Solid State Communications. ,vol. 3, pp. 299- 302 ,(1965) , 10.1016/0038-1098(65)90039-6