کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1804619 | 1024650 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mössbauer study of nanocrystalline cubic CuFe2O4 synthesized by precipitation in polymer matrix
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Nanocrystalline cubic CuFe2O4 was prepared at very low temperature by co-precipitation of metal ions in a polymer matrix. The sample annealed at 373 K showed very small clusters of cubic CuFe2O4 with an average size of 5 nm. The cubic phase showed excellent stability without undergoing any phase transition. The Mössbauer spectra of the annealed samples with a range of particle sizes were recorded at room temperature and 77 K. The samples annealed below 673 K showed paramagnetism and were unable to experience ordered magnetic structure even at 77 K. The sample annealed at 673 K with an average particle size of 12 nm showed superparamagnetic relaxation at room temperature and hyperfine structure at 77 K.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 307, Issue 1, December 2006, Pages 32–37
Journal: Journal of Magnetism and Magnetic Materials - Volume 307, Issue 1, December 2006, Pages 32–37
نویسندگان
S. Roy, J. Ghose,