کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1799571 | 1524848 | 2015 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Grain size effects on the magnetic properties of ZnxMn1âxFe2O4 nanoferrites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Single phase nanoferrites bearing the chemical formula ZnxMn1âxFe2O4 (0â¤xâ¤1.0) have been produced under low reaction temperature of 200 °C. The compounds were characterized by X-ray diffraction, Mössbauer and SQUID measurements. The particle size varies between 5 nm and 14 nm. The particle size dependence of the magnetic properties is investigated. Our results indicate spin-glass behavior at temperatures between 100 K and 200 K. The variation of Zn concentration has also significant effects on the structural and magnetic properties. The complex variation of lattice parameter with x is explained on the basis of redistribution of Zn atoms in both tetrahedral (A) and octahedral (B) sites. The 57Fe Mössbauer effect spectra show paramagnetic spin state in all the compounds.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 373, 1 January 2015, Pages 74-77
Journal: Journal of Magnetism and Magnetic Materials - Volume 373, 1 January 2015, Pages 74-77
نویسندگان
J.Z. Msomi, T.A. Nhlapo, T. Moyo, J. Snyman, A.M. Strydom,