Investigation of physical properties of the Ce$_{1-x}$Pr$_x$CoGe$_3$ system

We present the results of our studies of physical properties for the novel Ce$_{1-x}$Pr$_x$CoGe$_3$ system performed with a number of experimental methods: magnetic susceptibility, specific heat, electrical resistivity, magnetoresistance and thermoelectric power. All investigated materials of the Ce$_{1-x}$Pr$_x$CoGe$_3$ series crystallize in the tetragonal BaNiSn$_3$-type structure. The lattice parameters and unit cell volume decreases with increasing $x$. On the basis of the measurements taken, a tentative magnetic phase diagram was created. A continous suppression of the long-range magnetic order was observed as the concentration of Pr increase. The critical Pr concentration was determined from linear extrapolation to the lowest temperatures (T = 0$^\circ$K) and is equal to $x = 0.66$.