کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9803826 | 1516473 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Formation of crystalline MnFe2O4 powder by flame-combusting freeze-dried citrate precursors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Formation of crystalline MnFe2O4 powder by flame-combusting freeze-dried citrate precursors Formation of crystalline MnFe2O4 powder by flame-combusting freeze-dried citrate precursors](/preview/png/9803826.png)
چکیده انگلیسی
Crystalline MnFe2O4 particles with particle sizes in submicrometers were produced by flame-combusting the freeze-dried citrate precursors. Aqueous solutions of nitrates, containing Fe3+ and Mn2+ chelated by citric acid and with controlled pH using NH4OH additions, were freeze-dried. The freeze-dried citrate precursors were then thermally treated by combustion using a butane-induced flame, to decompose organic constituents and to form ferrites. The resultant particles were characterized using XRD, TG, DSC, FT-IR, SEM, and SQUID. At pH â¥Â 3, the flame-combusted specimens were composed of crystalline MnFe2O4 with average crystallite sizes of 28.5 ± 1.2 nm and exhibited magnetic characteristics of 48.7 ± 1.5 emu/g in magnetization measured at 1.5 kOe, 13.4 ± 0.2 emu/g in remanence magnetization, and 55.7 ± 3.9 Oe in coercive force.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 394, Issues 1â2, 17 May 2005, Pages 286-291
Journal: Journal of Alloys and Compounds - Volume 394, Issues 1â2, 17 May 2005, Pages 286-291
نویسندگان
Hsuan-Fu Yu, Shang-Wei Yang,