کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5491184 | 1524794 | 2017 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of sintering temperature on magnetization and Mössbauer parameters of cobalt ferrite nanoparticles
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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: Effect of sintering temperature on magnetization and Mössbauer parameters of cobalt ferrite nanoparticles Effect of sintering temperature on magnetization and Mössbauer parameters of cobalt ferrite nanoparticles](/preview/png/5491184.png)
چکیده انگلیسی
Nanoparticles of cobalt ferrite of different particle size were prepared using sol-gel method. Powder X-ray diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometer (VSM) and Mössbauer spectroscopy techniques were employed for characterization of nanoparticles for structural and magnetic properties. The particle size and saturation magnetization increase with the increase of sintering temperature. The saturation magnetization increases from 53 to 85 emu/g as the sintering temperature increases from 300 to 900 °C. The remanence increases while the coercivity decreases slightly with the increase of sintering temperature. Mössbauer spectra show the ferrimagnetic nature of all the samples and the cation distribution strictly depends on the sintering temperature. The stoichiometry of the cobalt ferrite formed was estimated to be (Co2+xFe3+1âx)[Co2+1âxFe3+1+x]O4, based on our Mössbauer analysis. The inverse spinel structure gradually transforms towards the normal spinel structure as the sintering temperature increases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 427, 1 April 2017, Pages 225-229
Journal: Journal of Magnetism and Magnetic Materials - Volume 427, 1 April 2017, Pages 225-229
نویسندگان
Grish Chandra, R.C. Srivastava, V.R. Reddy, H.M. Agrawal,