Tuning magnetic anisotropy by interfacial engineering in SrFeO2.5/La2/3Ba1/3MnO3/SrFeO2.5trilayers

被引：2
作者：
Huang, Hailin [1 ,2 ,3 ]
Zhu, Liang [1 ,2 ,3 ]
Zhang, Hui [1 ,2 ,3 ]
Zhang, Jine [1 ,2 ,3 ]
Han, Furong [1 ,2 ,3 ]
Song, Jinghua [1 ,2 ,3 ]
Chen, Xiaobing [1 ,2 ,3 ]
Qi, Shaojin [1 ,2 ,3 ]
Chen, Yuansha [1 ,2 ,3 ]
Cai, Jianwang [1 ,2 ,3 ]
Bai, Xuedong [1 ,2 ,3 ]
Hu, Fengxia [1 ,2 ,3 ]
Shen, Baogen [1 ,2 ,3 ,4 ]
Sun, Jirong [1 ,2 ,3 ,4 ]
机构：
[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
[3] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
[4] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2020年 / 53卷 / 44期
基金：
中国国家自然科学基金;
关键词：
interfacial engineering; perovskite; brownmillerite structure; magnetic anisotropy; orbital reconstruction; ORBITAL RECONSTRUCTION; OXIDE; HETEROSTRUCTURES; FILMS;
D O I：
10.1088/1361-6463/aba299
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Exploring emergent phenomena in complex oxide heterostructures by interfacial engineering is the frontier of the oxide electronics. The heterointerface formed by oxides with different structures is particularly interesting since symmetry mismatch may produce considerable interface reconstruction and unexpected emergent phenomena. Here, we demonstrate the abnormal magnetic anisotropy in SrFeO2.5/La2/3Ba1/3MnO3/SrFeO(2.5)trilayers that are consisted of the perovskite/brownmillerite heterostructures. The compressively strained La(2/3)Ba(1/3)MnO(3)layer sandwiched between the two SrFeO(2.5)layers exhibits in-plane magnetic anisotropy, while the La(2/3)Ba(1/3)MnO(3)bare film with the same strain state shows perpendicular magnetic anisotropy at low temperature. The high-resolution scanning transmission electron microscope and x-ray absorption spectroscopy analysis reveal the off-center displacement of the Mn ions at interfaces. This would cause a strong orbital reconstruction of Mn ions at the interface and thus the in-plane magnetic anisotropy. This work shows the great potential to explore novel phenomena in artificially designed multilayers by interfacial engineering.
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页数：8
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