Ceramic Interconnects Lanthanum and Yttrium Chromites

The electronic conductivity for an interconnect to perform adequately should be greater than about 1 S/cm at 1000°C. For either YCrOa or LaCrOs to obtain this level of conductivity, acceptor doping is required. Tables 7.1 and 7.2 list typical conductivity values that are obtainable. 

Dopant Composition Electrical conductivity Activation energy Ref. 

Fijiure 7.2 Ox)i jen vm mu ii eoneenlrtilion and electrical conductivity as a function of oxyyen partial pressure and dopant content for LaCrj -yMgxOiUt 1200°C 13]. 

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