کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10129009 | 1645163 | 2019 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of calcination temperature and flux doping on the microstructure and magnetic properties of low-temperature-fired NiCuZn ferrites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The correlative influences of calcination temperature and Bi2O3 doping content on the microstructure and magnetic properties of the low-temperature-fired NiCuZn ferrites were investigated. For ferrites with relatively low calcination temperatures, such as 750â¯Â°C and 850â¯Â°C, Bi2O3 doping easily triggered inhomogeneous grain growth. Controlling the flux amount to lower than the 'critical' value, which triggered abnormal grain growth, was preferred to obtain good magnetic properties. For ferrites with relatively high calcination temperatures, such as 950â¯Â°C and 1050â¯Â°C, flux doping was not prone to stimulating abnormal grain growth. Thus, the optimum doping content could be added when the highest sintered density was detected. With excessive Bi2O3 concentrations, low-temperature-calcined ferrites could produce homogeneous microstructures with a relatively large average grain size. By contrast, high-temperature-calcined ferrites could form homogeneous microstructures with a relatively small average size, which favoured a high Q-factor and was more favourable for high frequency applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 469, 1 January 2019, Pages 419-427
Journal: Journal of Magnetism and Magnetic Materials - Volume 469, 1 January 2019, Pages 419-427
نویسندگان
Hua Su, Qiang Luo, Yulan Jing, Yuanxun Li, Huaiwu Zhang, Xiaoli Tang,