Optical properties of α-rhombohedral boron

Werheit, H.; Kuhlmann, U.; Solov'ev, N.E.; Tsiskarishvili, G. P.; Tsagareishvili, G.V.

doi:10.1063/1.40850

Cited by 13 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In total, 30 nonzero modes with 20 distinct crystal vibration frequencies (barring accidental degeneracy) are predicted [29]. The first experimental Raman spectrum of α-rhombohedral boron, showing 12 peaks, was published by Richter and Ploog [30] and was subsequently confirmed by other authors [31][32][33][34][35]. Polarization-resolved measurements [33] provided information on the symmetry of the observed modes.…”

Section: Intra-and Inter-icosahedral B-b Distances (å)mentioning

confidence: 68%

“…Symmetry classification is after Tallant et al [33] and theoretical mode positions are after Vast et al [35]. The red curve indicates IR absorption [34].…”

Section: Intra-and Inter-icosahedral B-b Distances (å)mentioning

confidence: 99%

“…Polarization-resolved measurements [33] provided information on the symmetry of the observed modes. FT-Raman spectra were also obtained [34].…”

Section: Intra-and Inter-icosahedral B-b Distances (å)mentioning

confidence: 99%

See 2 more Smart Citations

Raman effect in icosahedral boron-rich solids

Werheit¹,

Филипов

Kuhlmann

et al. 2010

Science and Technology of Advanced Materials

133

116

View full text Add to dashboard Cite

We present Raman spectra of numerous icosahedral boron-rich solids having the structure of α-rhombohedral, β-rhombohedral, α-tetragonal, β-tetragonal, YB 66 , orthorhombic or amorphous boron. The spectra were newly measured and, in some cases, compared with reported data and discussed. We emphasize the importance of a high signal-to-noise ratio in the Raman spectra for detecting weak effects evoked by the modification of compounds, accommodation of interstitial atoms and other structural defects. Vibrations of the icosahedra, occurring in all the spectra, are interpreted using the description of modes in α-rhombohedral boron by Beckel et al. The Raman spectrum of boron carbide is largely clarified. Relative intra-and inter-icosahedral bonding forces are estimated for the different structural groups and for vanadium-doped β-rhombohedral boron. The validity of Badger's rule is demonstrated for the force constants of inter-icosahedral B-B bonds, whereas the agreement is less satisfactory for the intra-icosahedral B-B bonds.

show abstract

Section: Intra-and Inter-icosahedral B-b Distances (å)mentioning

confidence: 68%

“…Symmetry classification is after Tallant et al [33] and theoretical mode positions are after Vast et al [35]. The red curve indicates IR absorption [34].…”

Section: Intra-and Inter-icosahedral B-b Distances (å)mentioning

confidence: 99%

See 1 more Smart Citation

Raman effect in icosahedral boron-rich solids

Werheit¹,

Филипов

Kuhlmann

et al. 2010

Science and Technology of Advanced Materials

133

116

View full text Add to dashboard Cite

show abstract

“…For macroscopic phenomena, such as thermal expansion, the cancellation mechanism does not occur, because the signs of the changes in the bond lengths and angles are all (16). Note that only a portion of the experiment is shown.…”

Section: Cancellation Mechanismmentioning

confidence: 93%

Effects of the Geometries of Boron-Rich Crystals on the Lattice Dynamics

Shirai

Katayama‐Yoshida²

2000

Journal of Solid State Chemistry

View full text Add to dashboard Cite

“…Domashevskaya et al measured the density of states of the valence band of -r-B, -r-B, and am-B using X ray emission spectroscopy, but could not find a significant difference among them (12). Werheitet et al conducted optical absorption experiments between 0.4 and 2.8 eV using powder specimens of -r-B because the preparation of single crystals of -r-B with a millimeter size was difficult (13). They found two interband transitions at 1.63 and 2.06 eV.…”

Section: Introductionmentioning

confidence: 97%