کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8157708 | 1524870 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Superparamagnetic magnesium ferrite nanoparticles fabricated by a simple, thermal-treatment method
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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: Superparamagnetic magnesium ferrite nanoparticles fabricated by a simple, thermal-treatment method Superparamagnetic magnesium ferrite nanoparticles fabricated by a simple, thermal-treatment method](/preview/png/8157708.png)
چکیده انگلیسی
This study investigated the synthesis of magnesium ferrite (MgFe2O4) nanoparticles with cubic symmetry that were prepared by a thermal-treatment method by using a solution that contained poly (vinyl alcohol) (PVA) as a capping agent and Mg and Fe nitrates as alternative sources of metal. Heat treatment was conducted using an electric cylinder furnace in an air atmosphere at temperatures between 673 and 973Â K, and magnesium ferrite nanoparticles were produced that had different crystallite sizes ranging from5 to 8Â nm. The products were well characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), field emission scanning electron microscope (FESEM), X-ray analysis (EDXA), and Fourier transform infrared spectroscopy (FT-IR). All the samples calcined from 673 to 973Â K exhibited super paramagnetic behavior with unpaired electrons spins, which was confirmed by using a vibrating sample magnetometer (VSM) and electron paramagnetic resonance (EPR) spectroscopy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 350, January 2014, Pages 141-147
Journal: Journal of Magnetism and Magnetic Materials - Volume 350, January 2014, Pages 141-147
نویسندگان
Mahmoud Goodarz Naseri, Mohammad Hossein Majles Ara, Elias B. Saion, Abdul Halim Shaari,