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We report the appearance of superconductivity under hydrostatic pressure(0.35 to 2.5GPa) in Sr0.5RE0.5FBiS2 with RE = Ce, Nd, Pr and Sm. The studiedcompounds, synthesized by solid state reaction route, are crystallized intetragonal P4/nmm space group. At ambient pressure though the RE = Ce exhibitthe onset of superconductivity below 2.5K, the Nd, Pr and Sm samples are notsuperconducting down to 2K. With application of hydrostatic pressure (up to2.5GPa), superconducting transition temperature is increased to around 10K forall the studied samples. The magneto-transport measurements are carried out onall the samples with maximum Tc i.e., at under 2.5GPa pressure and their uppercritical fields are determined. The new superconducting compounds appear to bequite robust against magnetic field but within Pauli paramagnetic limit. Thenew superconducting compounds with various RE (Ce, Nd, Pr and Sm) belonging toSr0.5La0.5FBiS2 family are successfully synthesized for the first time andsuperconductivity is induced in them under hydrostatic pressure.

Appearance of bulk Superconductivity under Hydrostatic Pressure in Sr0.5RE0.5FBiS2 (RE = Ce, Nd, Pr and Sm) compounds