Experimental Studies of Rhombohedral Cr₂S₃ Single Crystal. II. Hopping Conductivity Dependent on Magnetic Order

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The electrical conductivity and magneto-resistance of CrS_x (x=1.50, 1.47 and 1.42) single crystals were measured as functions of temperatures. These results were compared with the calculations of the conductivity based on the hopping conduction model in which the effects of the magnetic ordering are taken into account. The conductivity of CrS_x was well described by the hopping mechanism which an electron hopping occurs within one magnetic sublattice. The temperature dependence of the susceptibility of the sublattice magnetization of b-site were evaluated from the measured negative magneto-resistance of CrS_1.50.