Room temperature ferromagnetism of N-doped TiO2 nanowires

Room temperature ferromagnetism of N-doped TiO2 nanowires
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N掺杂TiO2纳米线的室温铁磁性

DOI:
10.1016/j.matlet.2014.06.040
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发表时间:
2014-10
期刊:
影响因子:
3
通讯作者:
Huihui Ren
Huihui Ren
中科院分区:
材料科学3区
文献类型:
--
作者:
Xiaokang Jiang;Mamatrishat Mamat;Jing Li;Huihui Ren

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报道了水热法制备的纯和掺n tio2纳米线的结构和磁性表征。x射线吸收近边结构和x射线粉末衍射测量表明,在NH3中退火后,N掺杂到tio2基体中。发现掺杂N对tio2纳米线的锐钛矿结构没有影响,也没有形成与N相关的二次相。磁化研究表明,掺杂和未掺杂tio2均表现出室温铁磁性,饱和磁化强度随n掺杂的增加而增加。由此可见,氧空位和结晶度对tio2纳米线的室温铁磁性起着至关重要的作用。
The structural and magnetic characterization of pure and N-doped TiO2nanowires prepared by hydrothermal method was reported. The X-ray absorption near edge structure and X-ray powder diffraction measurements show that N was doped into TiO2host after annealing in NH3. It is found that doping with N has no effect on the anatase structure of TiO2nanowires and N related secondary phase is not formed. Magnetization studies reveal that the doped and undoped TiO2exhibited room temperature ferromagnetism and that saturation magnetization increased with N-doping. Thus, the results indicate the oxygen vacancies and crystallinity play a crucial role in room temperature ferromagnetism of TiO2nanowires.
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