کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8153225 1524763 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Size dependent exchange bias in single-phase Zn0.3Ni0.7Fe2O4 ferrite nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Size dependent exchange bias in single-phase Zn0.3Ni0.7Fe2O4 ferrite nanoparticles
چکیده انگلیسی
We report the microstructural and magnetic characterization of single phase nanocrystalline partially inverted Zn0.3Ni0.7Fe2O4 mixed spinel ferrite. The samples were annealed at 200 °C, 400 °C, 600 °C, 800 °C and 1000 °C. X-ray diffraction results indicate phase purity of all the samples and application of Debye- Scherrer yielded a crystallite size variation from 5 nm to 33 nm for the different samples. Magnetic measurements have revealed the freezing of interfacial spins which were the cause of the large horizontal M-H loop shift causing large exchange bias with high anisotropy. The magnetic measurements show a hysteresis loop with high effective anisotropy constant due to highly magnetically disordered surface spin at 5 K.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 458, 15 July 2018, Pages 193-199
نویسندگان
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