کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10155399 | 1666349 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced gyromagnetic properties of NiCuZn ferrite ceramics for LTCC applications by adjusting MnO2-Bi2O3 substitution
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
The demand for high performance microwave devices is increasingly promoting the development of miniaturization, integration and multifunctionalization. Here, a uniform and dense NiCuZn ferrite ceramic with high saturation magnetization and low ferromagnetic resonance linewidth was obtained at 950â¯Â°C by adjusting the MnO2-Bi2O3 composite additives. The MnO2-Bi2O3 composite additives were composed of 0.5â¯wt% MnO2 and x wt% Bi2O3 (xâ¯=â¯0.0, 0.5, 1.0, 1.5, 2.0, and 3.0). The phase structure, microstructures and magnetic properties were systematically studied by means of modern measurement techniques. SEM images reveal that appropriate MnO2-Bi2O3 additions can promote grain growth and reduce sintering temperatures, which is very advantageous for LTCC technology. In addition, the content of MnO2-Bi2O3 additives can significantly reduce ferromagnetic resonance linewidth (FMR) by promoting grain growth and densification at low temperatures. Finally, a uniform and compact NiCuZn ferrite ceramic with an improved 4ÏMs (~â¯3812.5 Gauss), a narrow ÎH (~â¯144.6â¯Oe), and a reduced Hc (~â¯85.2â¯A/m) were obtained (at 950â¯Â°C) by adding the optimal volume of Bi2O3 additive. It is expected that the improved gyromagnetic performances will allow the NiCuZn ferrite ceramics to be promising candidates for X-band microwave devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 16, November 2018, Pages 19370-19376
Journal: Ceramics International - Volume 44, Issue 16, November 2018, Pages 19370-19376
نویسندگان
Yan Yang, Jie Li, Huaiwu Zhang, Lichuan Jin, Fang Xu, Gongwen Gan, Gang Wang, Dandan Wen,