کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1491657 992356 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of calcining temperature on the magnetic properties of the ultra-fine NiCuZn-ferrites
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
The effect of calcining temperature on the magnetic properties of the ultra-fine NiCuZn-ferrites
چکیده انگلیسی

In this study, the ultra-fine NiCuZn-ferrite was prepared by a coprecipitation method. The magnetic properties were investigated in terms of calcining temperature. The ferrite powders, Ni0.206Cu0.206Zn0.618Fe1.94O4−δ, were initially heat treated at various temperatures of 300–750 °C, and then sintered at the final temperature of 900 °C. The average particle size calculated by a XRD pattern and confirmed by a transmission electron microscope (TEM) micrograph was 7.5 nm. The calcining temperature was an important factor for microstructures and magnetic properties of the sintered ferrite. Scanning electron microscope (SEM) micrographs showed a uniform grain growth with small pores and high densification at the calcining temperature of 450 °C. From the results of magnetic property measurements, the ferrite calcined at 450 °C showed higher initial permeability (170) and quality factor (72) than those of other calcining temperatures.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 44, Issue 3, 5 March 2009, Pages 633–637
نویسندگان
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