TRANSPORT PROPERTIES OF Mn_2−xCo_xSb (x≤0.30)

Abstract

The electrical resistivity ρ and the thermoelectric power S of Mn 2−x Co x Sb(x≦0.3) are studied. The abrupt change of ρ and S (0<x) appears near the temperature of magnetic order-order transition. S of Mn 2–x Co x Sb (0≦x≦0.3) is positive in the ferrimagnetic region and negative in the paramagnetic region. we have discussed these behaviour of ρ and S on the basis of the band structure of Mn 2 sb.