Griffiths-like phase and variable range hopping of polarons in orthorhombic perovskite Pr2CrMnO6.

Orthorhombic perovskite Pr2CrMnO6 has been synthesized by the Pechini method. XPS analysis confirm the presence of multiple oxidation states of Cr2+/ Cr3+ and Mn3+/Mn4+in the compound. From the electrical transport study, it is found that the resistivity of the material varies from 64x104 – 3x104 ohm-meter(Ωm) in the temperature range of 123 K- 300 K. Variable range hopping mechanism is found to be responsible for the conduction in the material. The transition temperature (TC) of the compound is found to be at 57 K. From the detailed analysis of the thermomagnetic data, the presence of short-range ferromagnetic correlations is confirmed which constitute the Griffiths-like phase in Pr2CrMnO6 up to the Griffiths temperature TG =144 K