Epitaxial LiMn2O4 was successfully synthesized by coating a [Li–Mn–O] metalorganic precursor solution onto MgO (110) substrates at temperatures as low as 350 °C. Cross-sectional transmission electron microscopy observation revealed that the orientation relationship between LiMn2O4 and MgO was (111) LiMn2O4 //(111) MgO, (110) LiMn2O4 //(110) MgO, and [112] LiMn2O4 //[112] MgO, which resulted in the (111) LiMn2O4 planes growing perpendicular to the surface plane of MgO. The interface structure consisted of (111) layers of Mn atoms in the LiMn2O4 crystal aligned with the Mg atoms in the (111) planes of the MgO substrate when viewed along the [112] direction.
通过在氧化镁(110)基底上涂覆[Li-Mn-O]金属有机前驱体溶液,在低至 350 °C 的温度下成功合成了外延锰酸锂。横截面透射电子显微镜观察发现,LiMn2O4 和 MgO 之间的取向关系为 (111) LiMn2O4 //(111) MgO、(110) LiMn2O4 //(110) MgO 和 [112] LiMn2O4 //[112] MgO,这导致 (111) LiMn2O4 平面垂直于 MgO 表面平面生长。当沿[112]方向观察时,界面结构由锰酸锂晶体中的锰原子(111)层与氧化镁衬底(111)平面中的镁原子对齐组成。