کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1805221 1024674 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic behavior of nanocrystalline MnCo2O4 spinels
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Magnetic behavior of nanocrystalline MnCo2O4 spinels
چکیده انگلیسی

A series of powders with different particle sizes of the spinel MnCo2O4MnCo2O4 was synthesized by the Pechini method. The resulting precursor was calcined between 400 and 900∘C and characterized by thermogravimetric analyses (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM) and magnetization measurements. TGA analysis showed a loss of mass in the region from 200200 to 650∘C and stability after this. XRD patterns showed an increase of the crystallite size with calcination temperature. Magnetization measurements on the sample calcined at 900∘C showed an unusual behavior of the hysteresis curve and irreversibility of the magnetization with field cooled (FC) and zero field cooled (ZFC) procedures. An evolution of this behavior was observed with increasing crystallite size.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 302, Issue 2, July 2006, Pages 273–277
نویسندگان
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