Structural and Electrical Property Studies of B-Site-Doped LaCrO3 Compound for Solid Oxide Fuel Cell Application.

This work focuses on the detailed crystal structure and dielectric properties of LaCrO₃ and Ni-doped LaCrO₃ (LaCr 0. 9 Ni 0. 1 O 3) compounds. Both the samples were synthesized via the auto-combustion route. The orthorhombic crystal structure with Pbnm space group of both the synthesized samples was confirmed using X-ray diffraction measurements. The average crystallite size of LaCr 0. 9 Ni 0. 1 O₃compound is 52.71 nm which was determined from the Debye Scherrer formula. In Ni-doped LaCrO₃compound, the formation of Cr 4 + ions at the octahedral sites affects the dielectric properties. Enhancement in AC conductivity in LaCr 0. 9 Ni 0. 1 O₃ compound is due to the hopping of charge carriers in the material. [ABSTRACT FROM AUTHOR]