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Atomic dynamics of lead embedded into nanoporous glass |
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| Authors: | P. P. Parshin M. G. Zemlyanov G. Kh. Panov A. A. Shikov A. A. Naberezhnov Yu. A. Kumzerov I. V. Golosovsky A. S. Ivanov |
| Affiliation: | 1.Russian Research Centre Kurchatov Institute,Moscow,Russia;2.Ioffe Physicotechnical Institute,Russian Academy of Sciences,St. Petersburg,Russia;3.Konstantinov Institute of Nuclear Physics,Russian Academy of Sciences,Gatchina, St. Petersburg,Russia;4.Institute Laue-Langevin,Grenoble Cedex,France |
| Abstract: | The thermal atomic vibration spectrum of lead nanostructured in porous glass with an average pore size of 7 nm and the thermal vibration spectrum of conventional bulk lead (taken for comparison) are measured using inelastic neutron scattering. The density of states in the phonon spectrum of lead nanoparticles is found to exceed the density of states in the spectrum of bulk lead at both low (E < 2.5 meV) and high (E > 9.5 meV) energies. These data are used to propose a model for the structure of a porous glass-lead nano-composite. |
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