Reply to “Comment on ‘Understanding first-order Raman spectra of boron carbides across the homogeneity range’ ”

نویسندگان

چکیده

In response to Werheit's Comment, we first discuss the following three points: (i) Attribution of Raman bands with help calculations based on density functional perturbation theory (DFPT), (ii) similarity spectrum boron carbide $\ensuremath{\alpha}$ rhombohedral boron, and (iii) dependence experimental frequency excitation laser. Central point at stake, also present a computed for time 405-atom unit-cell carbide, where simulation cell accounts substitutional disorder polar carbon atom in six atomic positions that are equivalent trigonal symmetry. We thus obtain theoretical whose agreement experiment is unprecedented all features being present, however negligible intensities doublet $270/320\phantom{\rule{0.16em}{0ex}}{\mathrm{cm}}^{\ensuremath{-}1}$. argue intensity seen experiments not purely vibrational---as mechanical equilibrium---and FT-Raman spectroscopy taken $1.06\phantom{\rule{4pt}{0ex}}\ensuremath{\mu}\mathrm{m}$ lacks accuracy necessary study vibrational modes carbides.

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ژورنال

عنوان ژورنال: Physical Review Materials

سال: 2022

ISSN: ['2476-0455', '2475-9953']

DOI: https://doi.org/10.1103/physrevmaterials.6.016602