Exchange coupling and improved properties of the multilayer CoFe2O4/La0.7Sr0.3MnO3 thin films
文献类型:期刊论文
作者 | Tang, Xianwu1; Zhu, Shunjin1,3; Wei, Renhuai1; Hu, Ling1; Yang, Jie1; Song, Wenhai1; Dai, Jianming1; Zhu, Xuebin1; Sun, Yuping1,2 |
刊名 | COMPOSITES PART B-ENGINEERING |
出版日期 | 2020-04-01 |
卷号 | 186 |
ISSN号 | 1359-8368 |
关键词 | Composite multilayer films Exchange coupling CoFe2O4 Magnetic properties |
DOI | 10.1016/j.compositesb.2020.107801 |
通讯作者 | Zhu, Xuebin(xbzhu@issp.ac.cn) ; Sun, Yuping(ypsun@issp.ac.cn) |
英文摘要 | Hard/soft interface plays a role in the properties of the composite metal based magnets, while it is less talked in the composite permanent oxide magnets on the magnetic interaction and properties due to easy interdiffusion. Here, multilayer thin films composed with hard CoFe2O4 phase and soft La0.7Sr0.3MnO3 layers were choose and synthesized without interdiffusion by a chemical solution method. Furthermore, the effects of the annealing temperature and the number of soft layer on the magnetic interaction and properties are investigated. All composite films behavior as one rigidly coupled composite magnet at room temperature, and the magnetic properties increase with increasing annealing temperature. The coercivity and maximum magnetic energy product can respectively reach 8.27 kOe and 2.4 MG Oe at the temperature of 300 K. Exchange coupling was effectively enhanced and even dominate the magnetic interaction with less soft layers for the in-plane direction. Conversely, dipolar interaction predominates, but becomes weak in the composite films with more soft layers and attenuates with increasing annealing temperature for the out-of-plane direction. All of the results suggest that a suitable grain size of the hard phase and an improved interface may be more important for a rigidly coupled composite oxide magnet with good performance. |
WOS关键词 | MAGNETIC-PROPERTIES ; HIGH-COERCIVITY ; PERMANENT-MAGNETS ; COFE2O4 ; COMPOSITE ; SIZE |
资助项目 | National Natural Science Foundation of China[11574321] ; Foundation of Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University |
WOS研究方向 | Engineering ; Materials Science |
语种 | 英语 |
出版者 | ELSEVIER SCI LTD |
WOS记录号 | WOS:000518706900009 |
资助机构 | National Natural Science Foundation of China ; Foundation of Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/103745] |
专题 | 中国科学院合肥物质科学研究院 |
通讯作者 | Zhu, Xuebin; Sun, Yuping |
作者单位 | 1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei 230031, Peoples R China |
推荐引用方式 GB/T 7714 | Tang, Xianwu,Zhu, Shunjin,Wei, Renhuai,et al. Exchange coupling and improved properties of the multilayer CoFe2O4/La0.7Sr0.3MnO3 thin films[J]. COMPOSITES PART B-ENGINEERING,2020,186. |
APA | Tang, Xianwu.,Zhu, Shunjin.,Wei, Renhuai.,Hu, Ling.,Yang, Jie.,...&Sun, Yuping.(2020).Exchange coupling and improved properties of the multilayer CoFe2O4/La0.7Sr0.3MnO3 thin films.COMPOSITES PART B-ENGINEERING,186. |
MLA | Tang, Xianwu,et al."Exchange coupling and improved properties of the multilayer CoFe2O4/La0.7Sr0.3MnO3 thin films".COMPOSITES PART B-ENGINEERING 186(2020). |
入库方式: OAI收割
来源:合肥物质科学研究院
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