Lanthanum nickel oxide conductive film and preparation method and application thereof

The invention provides a lanthanum nickel oxide conductive film. A chemical composition is LaNiO , wherein delta is smaller than or equal to 0.15 and greater than 0. The lanthanum nickel oxide conductive film of which the electrical property is not affected by strain is obtained through controlling the stoichiometric ratio of LaNiO . According to the record of the embodiment,after the stoichiometric ratio of LaNiO is changed, the phase composition of the lanthanum nickel oxide conductive film is not affected and reduction of the resistivity of the lanthanum nickel oxide conductive film is facilitated while the condition that the adverse effect of the strain on the resistivity can be eliminated is ensured. The invention further provides a preparation method of the lanthanum nickel oxide conductive film and an application of the lanthanum nickel oxide conductive film as an electrode material. 本发明提供了种镍酸镧导电薄膜，化学组成为LaNiO，其中，0＜δ≤0.15。本发明通过控制LaNiO的化学计量比得到了电学性能不受应变影响的镍酸镧导电薄膜，根据实施例的记载，本发明在改变