کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5490100 | 1524777 | 2017 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural and electromagnetic properties of NiAlxFe2âxO4/SiO2 nanocomposite films deposited using a sol-gel spin-coating method
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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: Structural and electromagnetic properties of NiAlxFe2âxO4/SiO2 nanocomposite films deposited using a sol-gel spin-coating method Structural and electromagnetic properties of NiAlxFe2âxO4/SiO2 nanocomposite films deposited using a sol-gel spin-coating method](/preview/png/5490100.png)
چکیده انگلیسی
NiAlxFe2âxO4/SiO2 (0 â¤Â x â¤Â 1.0) nanocomposite films deposited on Si(1 0 0) substrates were prepared by a sol-gel spin-coating method. The influences of Al3+ content and annealing temperature on the structural and electromagnetic properties of the nanocomposite films were investigated. The results indicated that NiAlxFe2âxO4 in the nanocomposite films crystallized after annealing at 1073 K and above. When the doping content x increased from 0 to 1.0, the lattice constants and the average crystallite sizes of the NiAlxFe2âxO4 nanoparticles decreased. The saturation magnetization and coercivity of the films were inversely proportional to the Al3+ content. The maximum value of saturation magnetization (361.6 emu/cm3) and the minimum value of coercivity (18.6 kA/m) were obtained for x of 0.2. When the annealing temperature increased from 1073 to 1473 K, the lattice constant and the average crystallite size of the NiAl0.2Fe1.8O4 nanoparticles increased from 0.8322 to 0.8349 nm and 4 to 28 nm, respectively, and the saturation magnetization and coercivity of the films increased from 214.8 to 464.5 emu/cm3 and 8.2 to 26.9 kA/m, respectively. Moreover, the DC resistivity of the films increased with increasing Al3+ content and annealing temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 444, 15 December 2017, Pages 193-197
Journal: Journal of Magnetism and Magnetic Materials - Volume 444, 15 December 2017, Pages 193-197
نویسندگان
Li Wang, Xuejian Li, Ji Li, Mei Liu, Shichong Xu, Haibo Li,