3襯底上制備出LaCoO3/LaMnO3雙層膜。在LaMnO3表面生長一層LaCoO3膜后，由于二者結(jié)構(gòu)對稱性差異，最終會在膜層界面處形成非對稱界面耦合。由于非對稱耦合作用，雙層膜的鐵磁轉(zhuǎn)變溫度從單層LaMnO3的262 K下降為200 K。此外，由于界面處Mn-O-Co的雙交換作用，與單層LaMnO3薄膜的矯頑場相比，雙層膜的矯頑場增大了約500%。研究結(jié)果表明，不同結(jié)構(gòu)和性質(zhì)的薄膜重組為多層膜的基礎(chǔ)研究和高性能功能材料的應用提供了一種新的結(jié)構(gòu)設(shè)計途徑。;The LaCoO3/LaMnO3 bilayers epitaxial film grown on (100) SrTiO3 substrates were obtained by a simple polymer assisted sol-gel deposition method. Growing a LaCoO3 layer on the top of LaMnO3 leads to the asymmetric interface coupling at the interface layer due to their difference in strucural symmetry, and reduces the ferromagnetic transition temperature caused by the asymmetric interface coupling effect from 262 K to 200 K. In addition, compared with the coercive field of isolated LaMnO3 film, the coercive field observed in the bilayers is increased by ~500% due to a strong ferromagnetic Mn-O-Co double exchange interaction at the interface. The results demonstrate that the recombination of multilayer films with different properties provides a new way to design functional materials for fundamental studies or demanding applications."/>