کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1621471 | 1005748 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Room-temperature ferromagnetism in Ti1âxVxO2 nanocrystals synthesized from an organic-free and water-soluble precursor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Room-temperature ferromagnetism in Ti1âxVxO2 nanocrystals synthesized from an organic-free and water-soluble precursor Room-temperature ferromagnetism in Ti1âxVxO2 nanocrystals synthesized from an organic-free and water-soluble precursor](/preview/png/1621471.png)
چکیده انگلیسی
Ti1âxVxO2 nanocrystals were prepared by employing a novel and water-soluble precursor via hydrothermal method, and the microstructure and magnetic properties have been investigated. All the samples belong to a pure anatase structure and exhibit room-temperature ferromagnetism (RTFM) without any trace of vanadium oxides or clusters. After V doping, the anatase structure is retained, while crystal growth is restrained. The homogenous distribution of V, in V4+ chemical state, in TiO2 lattice is confirmed by X-ray powder diffraction (XRD), energy-dispersive X-ray spectra (EDS), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses. Ferromagnetism in Ti1âxVxO2 is revealed to be highly dependent on the V content and defect concentrations. Furthermore, the annealing study in various atmospheres indicates that the oxygen vacancies and interstitials play a crucial role in inducing ferromagnetism in Ti1âxVxO2 system, and the origin of RTFM can be explained by bound magnetic polaron model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 499, Issue 2, 11 June 2010, Pages 160-165
Journal: Journal of Alloys and Compounds - Volume 499, Issue 2, 11 June 2010, Pages 160-165
نویسندگان
Xujie Lü, Jiangtian Li, Xinliang Mou, Jianjun Wu, Shangjun Ding, Fuqiang Huang, Yaoming Wang, Fangfang Xu,