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Room temperature ferromagnetism in D-D neutron irradiated rutile TiO2 single crystals

文献类型：期刊论文

作者Liu, Huan1; Li, Gongping1; Dejun, E.1; Xu, Nannan2; Lin, Qiaolu1; Gao, Xudong1; Lan, Changlin1; Chen, Jingsheng3; Wang, Canglong2; Zhan, Xuwen1
刊名RSC ADVANCES
出版日期2020-05-18
卷号10期号:32页码:18687-18693
DOI10.1039/d0ra02220a
通讯作者Li, Gongping(ligp@lzu.edu.cn)
英文摘要Room temperature ferromagnetism (RTFM) was observed in unirradiated rutile TiO2 single crystals prepared by the floating zone method due to oxygen vacancy (V-O) defects. D-D neutrons mainly collide elastically with TiO2, producing V-O, titanium vacancies (V-Ti) and other point defects; the density and kind of defect is related to the neutron irradiation fluence. D-D neutron irradiation is used to regulate the concentration and type of defect, avoiding impurity elements. As the irradiation fluence increases, the saturation magnetization (M-s) first increases, then decreases and then increases. To verify the origin of RTFM, the CASTEP module was used to calculate the magnetic and structural properties of point defects in TiO2. V-O induces a 2.39 mu(B) magnetic moment, Ti3+ and F+ induce 1.28 mu(B) and 1.70 mu(B) magnetic moments, respectively, while V-Ti induces a magnetic moment of similar to 4 mu(B). Combining experimental and theoretical results, increases in V-O concentration lead to M-s increases; more V-O combine with electrons to form F+, inducing a smaller magnetic moment. V-O and V-Ti play a key role and M-s changes accordingly with larger fluence. V-O, F+ and V-Ti are the most likely origins of RTFM.
WOS关键词ANATASE TIO2 ; PHOTOCATALYSIS ; MAGNETISM ; DEFECTS
资助项目National Natural Science Foundation of China[11575074] ; National Natural Science Foundation of China[11975006] ; National Natural Science Foundation of China[11905089] ; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University[lzujbky-2018-kb06] ; Fundamental Research Funds for the Central Universities of Ministry of Education of China[lzujbky-2017-it39] ; Fundamental Research Funds for the Central Universities of Ministry of Education of China[lzujbky-2018-it38] ; DSTI Foundation of Gansu[2018ZX-07]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000536705400017
出版者ROYAL SOC CHEMISTRY
资助机构National Natural Science Foundation of China ; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University ; Fundamental Research Funds for the Central Universities of Ministry of Education of China ; DSTI Foundation of Gansu
源URL[http://119.78.100.186/handle/113462/140830]  
专题中国科学院近代物理研究所
通讯作者Li, Gongping
作者单位1.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Gansu, Peoples R China
2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
3.Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117608, Singapore
4.China Inst Atom Energy, Beijing 102413, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Huan,Li, Gongping,Dejun, E.,et al. Room temperature ferromagnetism in D-D neutron irradiated rutile TiO2 single crystals[J]. RSC ADVANCES,2020,10(32):18687-18693.
APA Liu, Huan.,Li, Gongping.,Dejun, E..,Xu, Nannan.,Lin, Qiaolu.,...&Zhang, Kai.(2020).Room temperature ferromagnetism in D-D neutron irradiated rutile TiO2 single crystals.RSC ADVANCES,10(32),18687-18693.
MLA Liu, Huan,et al."Room temperature ferromagnetism in D-D neutron irradiated rutile TiO2 single crystals".RSC ADVANCES 10.32(2020):18687-18693.

入库方式： OAI收割

来源：近代物理研究所

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