Growth And Magnetic Properties Of La[sub 2]NiMnO[sub 6] Epitaxial Thin Films

Passivation of the La2NiMnO6 double perovskite to hydroxylation by excess nickel, and the fate of the hydroxylated surface upon heating

“…Nickel precipitates, primarily as LaNiO 3 or La 2 NiO 4 , have been reported, but perhaps the most interesting is an amorphous form of La 2 O 3 , proposed as a sink for lanthanum to create vacancies in the perovskite but for which no direct information from X-ray diffraction (XRD) or other methods of analysis has yet been obtained. La 2 NiMnO 6 samples have been synthesized in single crystal [12], polycrystalline [4,13,14], nanoparticle [15,16] and thin film [4,[17][18][19][20] forms by a variety of methods. Despite their complicated and defect-prone nature, the composition and stability of the La 2 NiMnO 6 surface have received little attention.…”