The crystal structure, transport and thermodynamic properties of ThCoGa4 single crystals

We have grown single crystals of ThCoGa4 by the self-flux method. X-ray examination showed that it crystallizes in an orthorhombic structure of the YNiA14-type. Electron transport properties examination between 2 and 300 K allowed us to determine its phonon components to the electrical resistivities/thermoelectric powers, which at 300 K are equal (in mu*W cm/muV K-1) to 17.3/11.7, 40.6/1.9 and 35.0/2.7, along the a-, b-, and c-axes, respectively. Specific heat examination allowed us to estimate the Sommerfeld coefficient and Debye temperature, which are equal to 6.9 (plus/minus 0.3) mJ K-2 mol-1 and 288 K, respectively. ThCoGa4 was found to be a paramagnet with a nearly temperature independent susceptibility above 30 K, equal to about 6.7 x 10-5 emu mol-1.