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On Raman scattering from selected M2AC compounds

Published online by Cambridge University Press:  31 January 2011

Oren D. Leaffer ,
Surojit Gupta ,
Michel W. Barsoum  and
Jonathan E. Spanier
Oren D. Leaffer
Affiliation:
Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104
Surojit Gupta
Affiliation:
Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104
Michel W. Barsoum
Affiliation:
Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104
Jonathan E. Spanier*
Affiliation:
Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

We report on the one-phonon Raman scattering spectra from the following M2AC MAX-phase ternary carbides: Ti2AlC, V2AlC, Cr2AlC, Nb2AlC, Ta2AlC, Ti2InC, Hf2InC, V2GeC, Cr2GeC, V2AsC, and Nb2AsC. We also report the results of calculations of the Γ-point, Raman-active phonon energies for these phases based on density functional theoretical simulations, including the effect of the k-point sampling on the convergence of phonon energies. Good agreement between all measured and calculated Γ-point Raman-active optical phonon energies is obtained.

Keywords

Raman spectroscopyLayeredMetal
Type
Rapid Communications
Information
Journal of Materials Research , Volume 22 , Issue 10 , October 2007 , pp. 2651 - 2654
Copyright
Copyright © Materials Research Society 2007

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References

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