+Advanced Search
The Lattice Dynamical Properties and Thermal Transport Properties of CeO2:a first-principle study
Author:
Affiliation:

State Key Laboratory of New Ceramics and Fine Processing,Tsinghua University

Clc Number:

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    The lattice dynamics, thermodynamic properties and thermal transport properties of CeO2 are calculated by the finite displacement method and the Boltzmann equation based on density functional theory. The calculated results are in good agreement with the corresponding experimental results. The important role of optical phonons in enhancing the lattice anharmonicity and phonon scattering rates is revealed by analyzing the vibration frequency, Grüneisen coefficient and scattering rate of all phonon modes. Moreover, by calculating the relationship between the cumulative lattice thermal conductivity and the phonon free path, it is found that the thermal conductivity of CeO2 is mainly contributed by phonons with a phonon free path between 1 and 10 nm.

    Reference
    Related
    Cited by
Get Citation

[Li Zheng, Pan Wei. The Lattice Dynamical Properties and Thermal Transport Properties of CeO2:a first-principle study[J]. Rare Metal Materials and Engineering,2020,49(2):510~514.]
DOI:10.12442/j. issn.1002-185X. qh20190060

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:April 25,2019
  • Revised:May 08,2019
  • Adopted:October 23,2019
  • Online: March 12,2020
  • Published: