کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1505047 993751 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Room-temperature ferromagnetism in silicon oxide/silicon nitride composite films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Room-temperature ferromagnetism in silicon oxide/silicon nitride composite films
چکیده انگلیسی

Room-temperature ferromagnetism has been observed in silicon oxide/silicon nitride composite films formed on Si substrates at different substrate temperatures, and the ferromagnetic properties of the samples have been found to depend on the silicon nitride content of the films. It is proposed that the ferromagnetism is related to the interface states between the silicon oxide particles and silicon nitride particles. The saturation magnetization (MS) reached its maximum value in the film produced at a substrate temperature of 400 °C. A further study on the magnetic properties of the film has been carried out using first-principles calculations based on the density functional theory. The calculations suggest that the magnetic moments of the film originate from N 2p and Si 2p states in the vicinity of the hetoro-interface.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Sciences - Volume 14, Issue 10, October 2012, Pages 1454–1457
نویسندگان
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