Ni-doped lanthanum gallate perovskites: Synthesis and structural, microstructural, and electrical characterisation
article i nfo This work reports on the synthesis and the characterisation of La0.9Sr0.1Ga1 −xNixO3 − δ (LSGN) with x=0, 0.1 and 0.2 (nominal compositions). For La0.9Sr0.1GaO3 − δ the XRD spectrum matched with that of orthorhombic LaGaO3. However, when Ni is introduced into the lattice a change in the symmetry from orthorhombic to rhombohedral is produced. The lattice volume decreases when Ni is introduced. EPR measurements confirm the presence of Ni 3+ for the Ni-doped LSGN materials. Furthermore, two different environments are detected