کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1484440 | 1510524 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetite nanowires in MCM-41 type mesoporous silica templates
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
MCM-41 mesoporous material was chosen as a template of very small Fe3O4 particles. The results of structural and magnetic studies of magnetite nanowires are reported. The average length of these nanowires is about 70Â nm and their diameter is 3Â nm. Magnetite polycrystalline nanowires were characterized by means of X-ray diffraction and 57Fe Mössbauer spectroscopy (MS). Almost 80% of the particles exist in a superparamagnetic state at room temperature. Mössbauer measurements also provided evidence that the composites displayed a distribution of magnetic particles by size. As a result, strong changes of superparamagnetic and magnetic relative contributions along with temperature were observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 354, Issues 35â39, 1 October 2008, Pages 4271-4274
Journal: Journal of Non-Crystalline Solids - Volume 354, Issues 35â39, 1 October 2008, Pages 4271-4274
نویسندگان
Zbigniew Surowiec, Marek Wiertel, MieczysÅaw BudzyÅski, Jan SarzyÅski, Jacek Goworek,