کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1615310 1516349 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, structural and magnetic properties of copper substituted nickel manganite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Synthesis, structural and magnetic properties of copper substituted nickel manganite
چکیده انگلیسی

The nanocrystalline Ni1−xCuxMn2O4 (x = 0, 0.25, 0.5, 0.75 and 1) manganites were synthesized by sol–gel autocombustion method. X-ray diffraction technique confirmed the formation of single phase cubic spinel structure for all the compositions studied. Lattice parameter values show a decreasing trend with an increase in Cu content. Thermal analysis of the precursor after autocombustion was carried out using TG–DTA technique. Formation of spherical nanoparticles was revealed by scanning electron microscopy (SEM). The elemental analysis as obtained by EDAX is in close agreement with the expected composition from the stoichiometry of reactant solutions used. The nano-sized grain structure formation was confirmed by transmission electron microscopy (TEM). The magnetic data indicates that, all the compositions are ferrimagnetic in nature. The detailed results of XRD, thermal analysis, SEM, EDAX, TEM, electrical and magnetic properties indicating the role of substitution of copper ions on the structural, electrical and magnetic properties of nickel manganite are presented.

Figure optionsDownload as PowerPoint slideHighlights
► Novel Ni1−xCuxMn2O4 manganite system.
► Sol–gel method for synthesis.
► VSM analysis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 544, 15 December 2012, Pages 197–202
نویسندگان
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