Electric conductivity of lead iron niobate
  Results of d.c. electric conductivity and Seebeck coefficient measurements for PFN, PFN+Li ceramic samples and PFN single crystals are presented. Marked influence of doping with lithium on the value of electric conductivity, and on the type of electric conductance has been found. 
K. Zieleniec, M. Milata, and K. Wojcik (Institute of physics,   University of Silesia)