کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5438581 1398185 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrothermal synthesis, magnetic properties and characterization of CoFe2O4 nanocrystals
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Hydrothermal synthesis, magnetic properties and characterization of CoFe2O4 nanocrystals
چکیده انگلیسی
Magnetic cobalt ferrite (CoFe2O4) nanocrystals were synthesized via the hydrothermal method and the crystallite size was measured using Sherrer's equation. Instrumental broadening was a significant parameter for determining crystallite size. The effect of annealing time and calcination on crystallite size and magnetic properties was discussed. It was found that the coercivity was highly dependent on the crystallite size. As the crystallite size increased from 61 to 68.2 nm, room temperature coercivity increased from 1488 Oe to 1700 Oe, while high coercivity (5.2 kOe) was achieved at lower temperature (80 K). It was found that the presence of hematite could affect the crystallite size after calcination.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 10, July 2017, Pages 7889-7894
نویسندگان
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