کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7921694 1511752 2018 34 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparative study of microwave absorption characteristics of (Polyaniline/NiZn ferrite) nanocomposites with different ferrite percentages
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Comparative study of microwave absorption characteristics of (Polyaniline/NiZn ferrite) nanocomposites with different ferrite percentages
چکیده انگلیسی
We present the preparation of polyaniline/Ni0.5 Zn0.5Fe2O4 (PANI/NiZn ferrite) nanocomposite. The preparation process consists of two steps: First, the ferrite is synthesized by self-combustion technique using sucrose as fuel. Then, the process is continued by in-situ chemical oxidative polymerization of aniline in the presence of the ferrite. Three different weight ratios of PANI/NiZn ferrite (1:2, 1:1, and 2:1) are prepared and structurally characterized by SEM, XRD, FT-IR and UV-vis spectroscopy. The functional characterization is performed by measuring the dc-conductivity, and microwave absorption characteristics in the range (8-12 GHz). XRD patterns prove the formation of the spinel ferrite, while SEM analysis indicates that the change in PANI/NiZn ferrite ratio has an effect on the morphology, which eventually influences the microwave absorption characteristics of the composite. A maximum reflection loss of −39.56 dB at 11.0 GHz with a matching thickness of 2.5 mm and a bandwidth of 3.0 GHz is obtained for PANI/NiZn ferrite having a weight ratio of 1:1 with only 25%w/w load in paraffin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 211, 1 June 2018, Pages 79-87
نویسندگان
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