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

Zhou, Zhenhua and Uher, Ctirad and Xu, Donghua and Johnson, W. L. and Gannon, W. and Aronson, M. C. (2006) On the existence of Einstein oscillators and thermal conductivity in bulk metallic glass. Applied Physics Letters, 89 (3). Art. No. 031924. ISSN 0003-6951. doi:10.1063/1.2234281.

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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.

Item Type:Article
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Xu, Donghua0000-0001-5018-5603
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.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-94ER45526
Subject Keywords:nickel; niobium alloys; tin alloys; metallic glasses; specific heat; thermal conductivity; phonons; hopping conduction
Issue or Number:3
Record Number:CaltechAUTHORS:ZHOapl06
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4505
Deposited By: Archive Administrator
Deposited On:25 Aug 2006
Last Modified:08 Nov 2021 20:17

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