eng Ansari Education and Research Society Journal of Ultra Scientist of Physical Sciences December 2009 21 3 505 508 jusps-B 1162 article Kanchan Gaur 1 Satyendra Singh 1 Department of Physics, K.N., Govt., P.G. College, Gyanpur, Bhadohi (India) <p style="text-align: justify;">The electrical conductivity (s) and Seebeck coefficient (S) of trivalent Nickel and Chromium zirconates are measured in the temperature range 500-1200K. It has been concluded that chromium zirconate undergoes a phase transition at 790 and nickel zirconate at 750K. In certain temperature ranges log s and S depend linearly on T^-1. It is shown that conduction mechanism in these solids is essentially band type with O^2- : 2p and M³⁺ : 4s (transition metal 4s) bands as valence and conduction band. Energy band gap and mobility of the charge carriers have also been evaluated.</p> https://ultraphysicalsciences.org/paper/1162/ Electrical conductivity Seebeck coefficient energy band, mobility.