Multiphonon Raman and infrared spectra of isotopically controlled diamond

Journal Article · Tue Sep 01 04:00:00 EDT 1998 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.58.5408· OSTI ID:644914

Vogelgesang, R; Alvarenga, A D; Kim, H; Ramdas, A K; Rodriguez, S ^[1]; Grimsditch, M ^[2]; Anthony, T R ^[3]

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1. Department of Physics, Purdue University, West Lafayette, Indiana 47907 (United States)
2. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. GE Corporate Research and Development, Schenectady, New York 12309 (United States)

Two-phonon spectra of {sup 12}C{sub 1{minus}x}{sup 13}C{sub x} diamonds, 0{le}x{le}1, are measured with a sensitive charge-coupled device-based Raman and a Fourier transform infrared spectrometer. Exploiting the infrared activity and the polarization characteristics of the Raman spectra recorded for a variety of scattering geometries, the two-phonon features are interpreted in terms of the critical points revealed in the phonon dispersion curves determined by inelastic neutron scattering. The occurrence of identical spectroscopic features in both {sup 13}C and natural diamond, consistent with virtual crystal approximation, proved invaluable in arriving at assignments for them. Space group selection rules for two-phonon combinations/overtones and the wave-vector conservation, all employed in a self-consistent fashion, yield the frequencies of the critical points with improved precision. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 644914
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 9 Vol. 58; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CARBON 12
CARBON 13
DIAMONDS
INFRARED SPECTRA
ISOTOPE EFFECTS
MULTI-PHOTON PROCESSES
PHONONS
RAMAN SPECTRA
SPACE GROUPS