Matthienssen's rule in polycrystalline metallic nanofilms

Qing Guang Zhang, Bing Yang Cao, Xing Zhang, Koji Takahashi, Motoo Fujii, Ling Yun Zhu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Matthiessen's rule has been applied to analyze the simultaneously measured electrical and thermal conductivities of polycrystal line platinum nanofilms. The results show that the greatly reduced conductivities are mainly attributed to the grain boundary scatterings. By taking into account the background scattering and the grain boundary scattering, Mathienssen's rule slightly underestimates the thermal conductivity, but obviously overestimates the electrical conductivity. By introducing an additional parameter characterizing electron scattering on the grain boundary in Matthiessen's rule, the agreement between the theoretical predictions and the observed results are greatly improved. Further studies show that when the mean grain size is much smaller than the corresponding mean free path, the electrons' behavior inside the grains becomes affected by the grain boundaries and the underlying assumption of independent scattering processes for Mathiessen's rule will become invalid.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Integration and Commercialization of Micro and Nanosystems 2007
Pages761-768
Number of pages8
DOIs
Publication statusPublished - 2007
EventInternational Conference on Integration and Commercialization of Micro and Nanosystems 2007 - Sanya, Hainan, China
Duration: Jan 10 2007Jan 13 2007

Publication series

NameProceedings of the International Conference on Integration and Commercialization of Micro and Nanosystems 2007
VolumeA

Other

OtherInternational Conference on Integration and Commercialization of Micro and Nanosystems 2007
CountryChina
CitySanya, Hainan
Period1/10/071/13/07

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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