Cation ordering and high-temperature crystal structure of La2NiRuO6

Abstract The structure of La 2 NiRuO 6 is studied with conventional X-ray and synchrotron-radiation diffraction methods. The obtained results show that this compound has a double perovskite structure with ordered arrangement of the B-site cations and P 2 1 / n space group. High-temperature diffraction measurements show that this structure is preserved up to 900 °C.