کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1624745 1516423 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cation distribution and crystallographic characterization of the quaternary spinel system MgxCo1−xCrxFe2−xO4
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Cation distribution and crystallographic characterization of the quaternary spinel system MgxCo1−xCrxFe2−xO4
چکیده انگلیسی
Quaternary spinel compound MgxCo1−xCrxFe2−xO4 (x = 0.0, 0.25, 0.50, 0.75 and 1.0) was synthesized in the solid state sintering method. Neutron powder diffraction measurements at room temperature were performed on the materials. Rietveld refinement of the neutron powder diffraction data was done for determining the cation distribution and crystallographic characterization of the system. The refinement yielded a mixed cationic distribution with Co, Fe and Mg being distributed over tetrahedral and octahedral sites in varying proportions while Cr was found to uniquely occupy the octahedral interstices. Increase of tetrahedral bond distance and decrease of octahedral bond distance with x was also revealed from the refinement. Sublattice and net magnetic moments at room temperature were also deduced from the refinement of room temperature neutron diffraction data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 454, Issues 1–2, 24 April 2008, Pages 10-15
نویسندگان
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