mp-554018-2/Mg3BeAl8O16/anharm

Equation of state

../../_images/fig_bm4644.png

(a) Equation of state

Harmonic properties

../../_images/fig_bandos_pr9242.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_bandos12959.png

(b) Phonon dispersion and DOS

../../_images/fig_thermo9242.png

(c) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all3684.png

(a) Grüneisen parameters

../../_images/fig_gruneisen3684.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO), supercell 2x2x1 — q-mesh: 13x13x4, supercell: 2x2x1

../../_images/fig_kappa6961.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size3733.png

(b) Peierls lattice thermal conductivity w.r.t grain size

Phonon lifetime and scattering rates

../../_images/fig_lifetime3650.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates3649.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency3650.png

(a) Spectral and cumulative thermal conductivity w.r.t frequency

../../_images/fig_cumu_mfp3649.png

(b) Spectral and cumulative thermal conductivity w.r.t MFP

Force constants

../../_images/fig_fc29004.png

(a) Force constants w.r.t atomic distance

Summary

../../_images/fig_times16113.png

(a) Computation time