Institutional Repository of Coll Mat Sci & Engn
Oxygen Vacancy Ordering Modulation of Magnetic Anisotropy in Strained LaCoO3- x Thin Films | |
Zhang, Ningbin1,2; Zhu, Yinlian1; Li, Da1; Pan, Desheng1,2; Tang, Yunlong1; Han, Mengjiao1; Ma, Jinyuan1,3; Wu, Bo1,2; Zhang, Zhidong1; Ma, Xiuliang1,3 | |
2018-11-07 | |
发表期刊 | ACS Applied Materials and Interfaces |
ISSN | 19448244 |
卷号 | 10期号:44页码:38230-38238 |
摘要 | Oxygen vacancy configurations and concentration are coupled with the magnetic, electronic, and transport properties of perovskite oxides, and manipulating the physical properties by tuning the vacancy structures of thin films is crucial for applications in many functional devices. In this study, we report a direct atomic resolution observation of the preferred orientation of vacancy ordering structure in the epitaxial LaCoO3-x (LCO) thin films under various strains from large compressive to large tensile strain utilizing scanning transmission electron microscopy (STEM). Under compressive strains, the oxygen vacancy ordering prefers to be along the planes parallel to the heterointerface. Changing the strains from compressive to tensile, the oxygen vacancy planes turn to be perpendicular to the heterointerface. Aberration-corrected STEM images, electron diffractions, and X-ray diffraction combined with X-ray photoelectron spectroscopy demonstrate that the vacancy concentration increases with increasing misfit strains and vacancy distribution is more ordered and homogeneous. The temperature-dependent magnetization curves show the Curie temperature increases, displaying a positive correlation with the misfit strains. With change in the strain from compressive to tensile, anisotropy fields vary and show large values under tensile strains. It is proposed that oxygen vacancy concentration and preferred ordering planes are responsible for the enhanced magnetic properties of LCO films. Our results have realized a controllable preparation of oxygen vacancy ordering structures via strains and thus provide an effective method to regulate and optimize the physical properties such as magnetic properties by strain engineering. © Copyright 2018 American Chemical Society. |
关键词 | High resolution transmission electron microscopy Lanthanum compounds Magnetic anisotropy Magnetism Oxygen Perovskite Perovskite solar cells Pulsed laser deposition Scanning electron microscopy Strain Tensile strain Thin films Transmission electron microscopy X ray photoelectron spectroscopy Aberration-corrected STEM Anisotropy field Oxygen vacancy concentration Oxygen vacancy orderings Preferred orientations Scanning transmission electron microscopy Temperature-dependent magnetizations Vacancy concentration |
DOI | 10.1021/acsami.8b13674 |
收录类别 | EI ; SCIE |
语种 | 英语 |
WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
WOS类目 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
WOS记录号 | WOS:000449887600053 |
出版者 | American Chemical Society |
EI入藏号 | 20184606074029 |
EI主题词 | Oxygen vacancies |
EI分类号 | 482.2 Minerals - 602.2 Mechanical Transmissions - 701.2 Magnetism: Basic Concepts and Phenomena - 741.3 Optical Devices and Systems - 744.9 Laser Applications - 804 Chemical Products Generally - 931.1 Mechanics - 933.1 Crystalline Solids - 951 Materials Science |
来源库 | Compendex |
分类代码 | 482.2 Minerals - 701.2 Magnetism: Basic Concepts and Phenomena - 741.3 Optical Devices and Systems - 744.9 Laser Applications - 804 Chemical Products Generally - 931.1 Mechanics - 933.1 Crystalline Solids - 951 Materials Science |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/114815 |
专题 | 材料科学与工程学院 材料科学与工程学院_特聘教授组 |
通讯作者 | Zhu, Yinlian |
作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China; 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China; 3.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Langongping Rd 287, Lanzhou 730050, Gansu, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Ningbin,Zhu, Yinlian,Li, Da,et al. Oxygen Vacancy Ordering Modulation of Magnetic Anisotropy in Strained LaCoO3- x Thin Films[J]. ACS Applied Materials and Interfaces,2018,10(44):38230-38238. |
APA | Zhang, Ningbin.,Zhu, Yinlian.,Li, Da.,Pan, Desheng.,Tang, Yunlong.,...&Ma, Xiuliang.(2018).Oxygen Vacancy Ordering Modulation of Magnetic Anisotropy in Strained LaCoO3- x Thin Films.ACS Applied Materials and Interfaces,10(44),38230-38238. |
MLA | Zhang, Ningbin,et al."Oxygen Vacancy Ordering Modulation of Magnetic Anisotropy in Strained LaCoO3- x Thin Films".ACS Applied Materials and Interfaces 10.44(2018):38230-38238. |
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