کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1805046 1024667 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microwave sintering of high-permeability (Ni0.20Zn0.60Cu0.20)Fe1.98O4 ferrite at low sintering temperatures
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Microwave sintering of high-permeability (Ni0.20Zn0.60Cu0.20)Fe1.98O4 ferrite at low sintering temperatures
چکیده انگلیسی
The (Ni0.20Zn0.60Cu0.20)Fe1.98O4 ferrite was sintered using microwave sintering and conventional sintering technique, respectively. It was found that microwave sintering technique can effectively promote the forward diffusion of ions and thus accelerate the sintering process, resulting in the grain growth and the densification of matrix. At the low frequency of 100 kHz, the magnetizing contribution of domain wall motion is predominant, and compact and coarse matrixes are favorable for domain wall motion, giving rise to improvement of relative initial permeability and loss of ferrites. Using microwave sintering technique, for the (Ni0.20Zn0.60Cu0.20)Fe1.98O4 ferrite, the relative initial permeability μi of about 2000 and the relative loss factor tanδ/μi of about 8.7×10−6 at 100 kHz were achieved at only 980 °C sintering temperature. In addition, the sintering time of ferrites was reduced from 5 to 0.5 h by using microwave sintering technique.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 305, Issue 1, October 2006, Pages 171-176
نویسندگان
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