High temperature electrical transport in iron and cobolt zirconates

Kanchan Gaur and Satyendra Singh¹

Department of Physics, K.N. Government P.G. College, Gyanpur, Bhadohi - 221 304 (India).

Received on June 06, 2009 and accepted on August 02, 2009

ABSTRACT

The electrical conductivity (s) and Seebeck coefficient (S) of trivalent Fe and Co zirconates were measured in the temperature range 500-1200K. The studied zirconates, Fe and Co, under go a phase transition at 780K and 760K respectively. The results have been explained on the basis of a energy band diagram. It has been concluded that conduction mechanism in these solids is intrinsic band type with O2– : 2p and M3+ : 4s bands as valence and conduction band.

Keywords : Electrical conductivity, Seebeck coefficient, Zirconates, conduction mechanism.