As the operating temperatures for solid oxide fuel cells (SOFC) have been reduced to the range of 600-800°C, new fuel cell materials and systems are being investigated to provide better performance and reduced manufacturing costs. Nickel ferrites are known to be thermally stable, electrically conductive, and have an adequate coefficient of thermal expansion (CTE). As such, they are prime candidates for both interconnect coatings and cathode-interconnect contact material. Nickel ferrite was synthesized via both solid state reactive sintering and the glycine nitrate process. The effects of sintering temperature, heating rate, pelletizing pressure, stoichiometry, and particle size on the sample densities, electrical conductivity, and CTE were studied systematically. Based on this study, the optimal conditions for spinel densification were identified and the best spinel compositions for SOFC applications were proposed.