The crystal structure and thermoelectric properties of La(Fe1-xSix)13 compounds were
investigated by means of X-ray powder diffraction and electrical resistivity, thermopower and
thermal conductivity measurements. The single NaZn13-type cubic structure phase is stabilized for
the compounds with x = 0.12, 0.14 and 0.15. These magnetic phase transitions are also seen in
the electrical resistivity, thermopower and thermal conductivity measurements. All compounds
have the small values of thermopower and lattice conductivity. However, thermal conductivity is
large.
