Using a structural field map for ABO(3) perovskites outlining the state of their d-electrons and their conduction behavior, strategies for semiconducting and metallic conducting perovskites can be investigated. In this study the electrical properties of the Pr1-xSrxMn1-yInyO3-delta perovskites have been characterized. The Pr1-xSrxMn1-yInyO3-delta perovskites show semi-conducting behavior for all compositions. Indium decreases the conductivity and increases the activation energy. The conductivity was found to be independent of oxygen partial pressure in the range from approximately 20% to 20 ppm and at temperatures up to 800 degrees C. The highest conductivity value of 143 S/cm was recorded for Pr0.5Sr0.5MnO3-delta at 800 degrees C. (c) 2006 Elsevier B.V. All rights reserved.