کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1801086 | 1024558 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic properties of magnetite thin films close to the Verwey transition
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Temperature dependence of the magnetic properties of magnetite thin film across the Verwey transition has been investigated. As the temperature is decreased, the magnetization of the film in a fixed field showed a sharp decrease close to the Verwey transition temperature (Tv). The M–H loops of the film have been recorded at various temperatures below and above Tv. It is found that film does not saturate at any temperature and saturation becomes more difficult below Tv. While cooling through Tv, the extrapolated value of magnetization to infinite field (Q), calculated from the numerical fit 4πM=Q [1−(H*/H)1/2], does not show a drop, but the coefficient indicating difficulty in saturation (H*) shows a sharp rise as does the coercivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 22, November 2009, Pages 3738–3741
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 22, November 2009, Pages 3738–3741
نویسندگان
Murtaza Bohra, Shiva Prasad, N. Venketaramani, Naresh Kumar, S.C. Sahoo, R. Krishnan,