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Phonon frequency distribution function and temperature variation of Rayleigh Mössbauer scattering fraction from aligned multiwalled carbon nanotubes
J. Nanophoton. 5, 053508 (May 17, 2011); http://dx.doi.org/10.1117/1.3590198
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Add to FacebookThe phonon frequency distribution function (FDF) of aligned multiwalled carbon nanotubes (MWNTs) was obtained by unfolding its observed temperature variation of specific heat in the temperature range 1.8 to 250 K. An anisotropic dynamical model which incorporates the presence of two-dimensional modes on the surface of the tube and the intertube coupling was used as a trial function to carry out the unfolding process numerically. Temperature variation of Rayleigh Mössbauer scattering fraction of Sn-119 gamma-photons was computed using the trial and final FDF of MWNT. The temperature variation of Rayleigh Mössbauer scattering fraction in each case is quite marked and can be observed experimentally.
© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)
History
Received Dec 16, 2010
Accepted Apr 15, 2011
Revised Apr 14, 2011
Published online May 17, 2011
Accepted Apr 15, 2011
Revised Apr 14, 2011
Published online May 17, 2011
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Citation
Poonam Silotia, Seema Dabas, Aditya Saxena and Shri-Prakash Tewari, "Phonon frequency distribution function and temperature variation of Rayleigh Mössbauer scattering fraction from aligned multiwalled carbon nanotubes",
J. Nanophoton. 5, 053508 (May 17, 2011); http://dx.doi.org/10.1117/1.3590198
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