Fig. 3: Thermal transport properties of TiRu1+xSb samples.

a Total thermal conductivity (κ) above room temperature. b Lattice thermal conductivity (κ − κe) from 2 to 300 K. c Lattice thermal conductivity (κ − κe) in comparison with characteristic HH and FH compounds in the temperature range of 300–1000 K. d Ru content-dependent average (vs), longitudinal (vl), and transverse (vt) sound velocities. The solid lines in a–c are the experimental data of TiFe1.33Sb, α-SiO2, ZrNiSn, TiCo2Sn, and other typical HH compounds taken from literatures6,15,16,17,18,19,20,21,22.