کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1606354 | 1516224 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Cr3+ substitution on electric and magnetic properties of cobalt ferrite nanoparticles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of Cr3+ substitution on electric and magnetic properties of cobalt ferrite nanoparticles Effect of Cr3+ substitution on electric and magnetic properties of cobalt ferrite nanoparticles](/preview/png/1606354.png)
چکیده انگلیسی
This work describes the effect of incorporation of Cr3+ into CoFe2O4 nanoparticles on its magnetic and electric properties, prepared by auto combustion method. The samples of CoFe2-xCrxO4 (x = 0, 0.15, 0.3) series were characterized by x-ray diffraction and field emission scanning electron microscopy to find out the average particle size. The substitution of Cr3+ caused a significant reduction in particle size of the modified systems. Room temperature Mossbauer spectroscopy and magnetic characterization were performed. Analysis of extracted parameters concluded that Cr3+ replaced the Fe3+ at B-site (octahedral). The decrease in magnetization at B-site was found responsible for the observed reduced saturation magnetization and coercivity. Impedance spectroscopic analysis has revealed the suppression of electrode-sample surface conduction effect and enhancement of material resistivity. The latter was confirmed by dc resistivity measurement. All these results were explained on the basis of occupancy of Cr3+ at B-site, surface anisotropy potential and reduced particle size.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 669, 5 June 2016, Pages 19-28
Journal: Journal of Alloys and Compounds - Volume 669, 5 June 2016, Pages 19-28
نویسندگان
R.K. Panda, R. Muduli, G. Jayarao, D. Sanyal, D. Behera,