کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7904260 1510661 2018 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructural and magnetic properties of Ni1-xCuxFe2O4 (x = 0.05, 0.1 and 0.15) nano-crystalline ferrites
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Microstructural and magnetic properties of Ni1-xCuxFe2O4 (x = 0.05, 0.1 and 0.15) nano-crystalline ferrites
چکیده انگلیسی
An attempt was made to synthesize Ni1-xCuxFe2O4 (x = 0.05, 0.1 and 0.15) nano-crystalline ferrites by sol-gel auto-combustion method and study their micro-structural, magnetic and dielectric properties. From the X-ray diffraction patterns, the lattice constants, average crystallite size, grain size of these compounds were calculated and compared to those of the nickel ferrite. The cation distribution obtained from X-ray diffraction shows that the copper occupies only tetrahedral sites in spinel lattice. The lattice constant of the ferrites under consideration increases with increasing the copper content. The structural parameters such as bond lengths, tetrahedral and octahedral and octahedral edges were varied by copper substitutions. The microstructural study was carried out by using SEM technique. It implies that the average grain size increases with increasing the copper concentration. Similar tendency was observed for the initial permeability (μi). It turns out from the electron spin resonance investigation that the g-factor decreased linearly with increasing magnetic fields as well as dopant concentrations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Science: Advanced Materials and Devices - Volume 3, Issue 2, June 2018, Pages 236-242
نویسندگان
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