Resistance Minimum in V-doped Cr-4 at.%Co Alloys

The electrical resistivity of antiferromagnetic ( Cr_100-xV_x )–4 at.% Co alloys with x =0, 0.3, 1, 2.5 and 3, and of a paramagnetic alloy with x =8 is measured. A resistance minimum is observed for the alloys with x =0 and 0.3, but is not seen for x =1, 2.5 and 3. A large resistance minimum is found to appear again for the paramagnetic alloy. The disappearance of the minimum in the V-doped alloys corresponds well to the result obtained by applying pressure.