  We report superconducting properties of PrO1-xFxBiS2 compounds, synthesized
by the vacuum encapsulation technique. The synthesized PrO1-xFxBiS2 (x=0.1,
0.3, 0.5, 0.7 and 0.9) samples are crystallized in a tetragonal P4/nmm space
group. Both transport and DC magnetic susceptibility measurements showed bulk
superconductivity below 4 K. The maximum Tc is obtained for x = 0.7 sample.
Under applied magnetic field both Tc onset and Tc (R =0) decrease to lower
temperatures. We estimated highest upper critical field [Hc2(0)] for
PrO0.3F0.7BiS2 sample to be above 4 T (Tesla). The thermally activated flux
flow (TAFF) activation energy (U0) is estimated 54.63 meV in 0.05 Tesla field
for PrO0.3F0.7BiS2 sample. Hall measurement results showed that electron charge
carriers are the dominating ones in these compounds. Thermoelectric effects
(Thermal conductivity and Seebeck coefficient) data suggest strong
electron-electron correlations in this material.
