Chen Yan-Bin, Zhang Fan, Zhang Lun-Yong, Zhou Jian, Zhang Shan-Tao, Chen Yan-Feng. Exploring multiferroic materials based on artificial superlattice LaFeO3-YMnO3 and natural superlattice n-LaFeO3-Bi4Ti3O12 thin filmsJ. Acta Physica Sinica, 2015, 64(9): 097502. DOI: 10.7498/aps.64.097502