کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8156697 | 1524851 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nanosized Ce-Zn substituted microwave absorber material for X-band applications
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Nanosized Ce-Zn substituted microwave absorber material for X-band applications Nanosized Ce-Zn substituted microwave absorber material for X-band applications](/preview/png/8156697.png)
چکیده انگلیسی
The sol-gel autocombustion method has been used to synthesize the Ce-Zn substituted with composition Sr2âxCexNi2Fe28âyZnyO46 (x=0.02, 0.04, 0.06, 0.08, 0.010 and y=0.1, 0.2, 0.3, 0.4, 0.5) X-type hexagonal ferrites. The XRD analysis confirms the single phase of the material. The variation in lattice parameters can be observed with addition of Ce-Zn dopant. The ferrites substituted with Ce-Zn contents have low value of grain size than the unsubstituted ferrites. The crystallite size measured from TEM and HRTEM analysis was found in the range of 40-45 nm which is in good agreement with the theoretically measured by Scherer formula. The room temperature electrical resistivity lies in the range of ~109 Ω-cm, so the investigated sample can be considered good material for reducing the eddy current losses. The enhancement in magnetic properties (saturation magnetization, retentivity and coercivity) has been observed with the substitution of Ce-Zn contents in pure ferrites. The increment in resistivity and magnetic properties with the substitution of Ce-Zn dopant makes it important candidate to be used in the formation of multilayer chip inductors (MLCIs). The maximum reflection loss of â23.4 dB at 12.858 GHz is obtained by Ce-Zn doped ferrites and attenuation constant agrees well with the reflection loss. The microwave absorption properties of this substituted material reflect its applications in super high frequency (SHF) devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 370, December 2014, Pages 25-31
Journal: Journal of Magnetism and Magnetic Materials - Volume 370, December 2014, Pages 25-31
نویسندگان
Imran Sadiq, Irshad Ali, Evgeny Rebrov, Shahzad Naseem, M. Naeem Ashiq, M.U. Rana,