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Published July 17, 2006 | Published
Journal Article Open

On the existence of Einstein oscillators and thermal conductivity in bulk metallic glass

Abstract

Low-temperature specific heat and thermal conductivity of bulk metallic glasses are measured to identify the primary vibrational modes associated with their unique structures. An Einstein-type localized vibrational mode with an Einstein temperature of 112 K is found in bulk metallic glass Ni59.5Nb33.6Sn6.9. This localized vibrational mode causes resonant scattering of phonons and results in the localization of phonons which leaves the phonon hopping conduction the limiting mechanism of thermal transport in bulk metallic glass Ni59.5Nb33.6Sn6.9 at high temperature.

Additional Information

© 2006 American Institute of Physics. (Received 27 January 2006; accepted 19 June 2006; published online 21 July 2006) The work of the two of the authors (W.G. and M.C.A.) is carried out under the auspices of the United States Department of Energy under Grant No. DE-FG02-94ER45526.

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August 22, 2023
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