کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1531636 | 1512016 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of synthetical conditions on octahedral magnetite nanoparticles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
By controlling the growth kinetics of nanoparticles, octahedral magnetite nanoparticles were successfully synthesized employing an oxidation–precipitation method with FeSO4·7H2O, NaNO3 and NaOH as starting materials. Magnetite nanoparticles with 40 nm or less can be synthesized under the following conditions: pH 9.5, F = 10–90 ml/min, T = 60–90 °C, C = 0.2–1 mol/l, t = 4 h, R = 200–500 rpm. The saturation magnetizations of octahedral magnetite nanoparticles are in the range from 80 emu/g to 90 emu/g. The remanence magnetizations of the as-prepared samples are lower than that of the bulk magnetite and the coercive forces of the as-prepared sample are around 140 Oe.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 136, Issues 2–3, 25 January 2007, Pages 101–105
Journal: Materials Science and Engineering: B - Volume 136, Issues 2–3, 25 January 2007, Pages 101–105
نویسندگان
Wen-Guang Yu, Tong-Lai Zhang, Xiao-Jing Qiao, Jian-Guo Zhang, Li Yang,