Figure 5

The experimental phonon thermal conductivity and Callaway model simulation.
(a) The solid circle, cube, triangle and diamond represent the experimental data of the bulk and NWs. The open symbols show the simulated phonon thermal conductivity without Ga ion irradiation. The star symbols represent the data from Liang Li et al.11 measured by the same technique and the dash line shows the Callaway model simulation curve. (b) The experimental lattice thermal conductivity data of pristine 280 nm NW with no ion irradiation (solid circle) and the simulation curve of BST bulk (dash line).