کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9834332 | 1524909 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation and properties of ferromagnetic FePt dispersion
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Preparation and properties of ferromagnetic FePt dispersion Preparation and properties of ferromagnetic FePt dispersion](/preview/png/9834332.png)
چکیده انگلیسی
FePt nanoparticles were prepared via the coreduction of platinum and iron acetyl acetonate precursors in tetraethylene glycol at various temperatures. The X-ray diffractogram of the as-synthesized FePt nanoparticles at temperatures above 573Â K exhibited (0Â 0Â 1) and (1Â 1Â 0) superlattice reflections. TEM-EDX studies revealed that the average particle diameter was 5Â nm with nearly equiatomic composition. The saturation magnetization and coercivity at room temperature (RT) were found to be 50Â emu/g and 2.1Â kOe, respectively. The high anisotropy field of about 32Â kOe and magnetic ordering at RT revealed the presence of the highly anisotropic L10 phase. These particles were partially dispersed in an organic solvent using oleyl amine as surfactant. The dispersed FePt nanoparticles will be useful in future technological applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 289, March 2005, Pages 1-4
Journal: Journal of Magnetism and Magnetic Materials - Volume 289, March 2005, Pages 1-4
نویسندگان
K. Sato, B. Jeyadevan, K. Tohji,