کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1548089 997719 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of annealing on properties of Mg doped Zn-ferrite nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Effect of annealing on properties of Mg doped Zn-ferrite nanoparticles
چکیده انگلیسی
A comparison of structural and magnetic properties of as-prepared and annealed (900 °C) Mg doped Zn ferrite nanoparticles (Zn1−xMgxFe2O4, with x=0, 0.1, 0.2, 0.3, 0.4 and 0.5) is presented. X-ray diffraction (XRD) studies confirmed the cubic spinel structure for both the as-prepared and annealed nanoparticles. The average crystallite size and lattice parameter were increased by annealing. Scanning electron microscopy (SEM) images also showed that the average particle size increased after annealing. Fourier transform infrared spectroscopy (FTIR) also confirmed the spinel structure for both series of nanoparticles. For both annealed and as-prepared nanoparticles, the O-Mtet.-O vibrational band shifts towards higher wave numbers with increased Mg concentration due to cationic rearrangement on the lattice sites. Magnetization studies revealed an anomalous decreasing magnetization for the annealed nanoparticles which is also ascribed to cationic rearrangement on the lattice sites after annealing. The measurement of coercivity showed a decreasing trend by annealing due to the increased nanoparticle size and better crystallinity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Natural Science: Materials International - Volume 25, Issue 2, April 2015, Pages 111-116
نویسندگان
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