کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1799153 | 1524836 | 2015 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic studies of Sn0.2Cr1.8âxFexO3 compounds prepared via the hydrothermal route
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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: Magnetic studies of Sn0.2Cr1.8âxFexO3 compounds prepared via the hydrothermal route Magnetic studies of Sn0.2Cr1.8âxFexO3 compounds prepared via the hydrothermal route](/preview/png/1799153.png)
چکیده انگلیسی
Tin-iron chromium oxides (Sn0.2Cr1.8âxFexO3 with x varying from 0.3 to 1.3) have been produced by hydrothermal process in a stirred pressure reactor from pure metal chlorides. Single phase corundum structure and nanophase structure of the as-synthesized samples were confirmed by X-ray diffraction (XRD) and by transmission electron microscope (TEM). The results show that the produced powders have grain sizes in the range 25-34 nm. 57Fe Mössbauer spectra show the materials to be paramagnetic for Fe concentration xâ¤0.5 and in ordered magnetic state at higher concentration. The variations of grain sizes, lattice parameters, and Mössbauer parameters as a function of composition have also been investigated. The coercivity increases rapidly with size, attaining a maximum value, and then decreases with size of the particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 385, 1 July 2015, Pages 282-285
Journal: Journal of Magnetism and Magnetic Materials - Volume 385, 1 July 2015, Pages 282-285
نویسندگان
Kalengay Mbela, T. Moyo, J.Z. Msomi,