کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10710570 | 1024698 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetite-cobalt ferrite nanoparticles for kerosene-based magnetic fluids
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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: Magnetite-cobalt ferrite nanoparticles for kerosene-based magnetic fluids Magnetite-cobalt ferrite nanoparticles for kerosene-based magnetic fluids](/preview/png/10710570.png)
چکیده انگلیسی
Due to the magnetic anisotropy introduced by the Co2+ ion in octahedral sites of cubic spinel ferrites, it is possible to tailor the magnetic properties by changing the cobalt content. Magnetic fluids with magnetite-cobalt ferrite nanoparticles given by the formula Co(x)Fe(3âx)O4 with x=0, 0.2 and 0.4 were prepared. Kerosene and oleic acid were used as liquid carrier and surfactant, respectively. Spherical magnetic nanoparticles were obtained by coprecipitation from metal salts and ammonium hydroxide; afterwards the magnetic fluids were obtained by a peptization process. Powder properties were characterized by X-ray diffraction (XRD), nitrogen adsorption-desorption isotherma (BET), vibrating sample magnetometry (VSM) and fluids by transmission electron microscopy (TEM), thermogravimetric analyzer (TGA), VSM and the short-circuited transmission line technique.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 294, Issue 2, July 2005, Pages e37-e41
Journal: Journal of Magnetism and Magnetic Materials - Volume 294, Issue 2, July 2005, Pages e37-e41
نویسندگان
O. Ayala-Valenzuela, J. Matutes-Aquino, R. Betancourt-Galindo, L.A. GarcÃa-Cerda, O. RodrÃguez Fernández, P.C. Fannin, A.T. Giannitsis,