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Interfacial Control of Ferromagnetism in Ultrathin SrRuO3 Films Sandwiched between Ferroelectric BaTiO3 Layers
Gu, Youdi1,2; Song, Cheng1; Zhang, Qinghua3; Li, Fan4; Tan, Hengxin4; Xu, Kun5; Li, Jia3; Saleem, Muhammad Shahrukh1; Fayaz, Muhammad Umer1; Peng, Jingjing6; Hu, Fengxia3; Gu, Lin3; Liu, Wei2; Zhang, Zhidong2; Pan, Feng1
Corresponding AuthorSong, Cheng(songcheng@mail.tsinghua.edu.cn) ; Liu, Wei(wliu@imr.ac.cn)
2020-02-05
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume12Issue:5Pages:6707-6715
AbstractInterfaces between materials provide an intellectually rich arena for fundamental scientific discovery and device design. However, the frustration of magnetization and conductivity of perovskite oxide films under reduced dimensionality is detrimental to their device performance, preventing their active low-dimensional application. Herein, by inserting the ultrathin 4d ferromagnetic SrRuO3 layer between ferroelectric BaTiO3 layers to form a sandwich heterostructure, we observe enhanced physical properties in ultrathin SrRuO3 films, including longitudinal conductivity, Curie temperature, and saturated magnetic moment. Especially, the saturated magnetization can be enhanced to similar to 3.12 mu(B)/Ru in ultrathin BaTiO3/SrRuO3/BaTiO3 trilayers, which is beyond the theoretical limit of bulk value (2 mu(B)/Ru). This observation is attributed to the synergistic ferroelectric proximity effect (SFPE) at upper and lower BaTiO3/SrRuO3 heterointerfaces, as revealed by the high-resolution lattice structure analysis. This SFPE in dual-ferroelectric interface cooperatively induces ferroelectric-like lattice distortions in RuO6 oxygen octahedra and subsequent spin-state crossover in SrRuO3, which in turn accounts for the observed enhanced magnetization. Besides the fundamental significance of interface-induced spin-lattice coupling, our findings also provide a viable route to the electrical control of magnetic ordering, taking a step toward low-power applications in all-oxide spintronics.
KeywordSrRuO3 sandwich heterostructure synergistic ferroelectric proximity effect enhanced magnetism spin-state transition ferroelectric-like lattice distortions
Funding OrganizationBeijing Innovation Center for Future Chip (ICFC), Tsinghua University ; Young Chang Jiang Scholars Program ; National Key R&D Program of China ; National Natural Science Foundation of China
DOI10.1021/acsami.9b20941
Indexed BySCI
Language英语
Funding ProjectBeijing Innovation Center for Future Chip (ICFC), Tsinghua University ; Young Chang Jiang Scholars Program ; National Key R&D Program of China[2017YFB0405704] ; National Natural Science Foundation of China[51671110] ; National Natural Science Foundation of China[51802297] ; National Natural Science Foundation of China[51571128]
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000512216900158
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/137249
Collection中国科学院金属研究所
Corresponding AuthorSong, Cheng; Liu, Wei
Affiliation1.Tsinghua Univ, Key Lab Adv Mat MOE, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
2.Univ Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Chinese Acad Sci, Shenyang 110016, Peoples R China
3.Univ Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Chinese Acad Sci, Beijing 100190, Peoples R China
4.Max Planck Inst Microstruct Phys, D-06120 Halle, Saale, Germany
5.Tsinghua Univ, Natl Ctr Electron Microscopy Beijing, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
6.Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China
Recommended Citation
GB/T 7714
Gu, Youdi,Song, Cheng,Zhang, Qinghua,et al. Interfacial Control of Ferromagnetism in Ultrathin SrRuO3 Films Sandwiched between Ferroelectric BaTiO3 Layers[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(5):6707-6715.
APA Gu, Youdi.,Song, Cheng.,Zhang, Qinghua.,Li, Fan.,Tan, Hengxin.,...&Pan, Feng.(2020).Interfacial Control of Ferromagnetism in Ultrathin SrRuO3 Films Sandwiched between Ferroelectric BaTiO3 Layers.ACS APPLIED MATERIALS & INTERFACES,12(5),6707-6715.
MLA Gu, Youdi,et al."Interfacial Control of Ferromagnetism in Ultrathin SrRuO3 Films Sandwiched between Ferroelectric BaTiO3 Layers".ACS APPLIED MATERIALS & INTERFACES 12.5(2020):6707-6715.
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