کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5491322 1524798 2017 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hole-induced d0 ferromagnetism enhanced by Na-doping in GaN
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Hole-induced d0 ferromagnetism enhanced by Na-doping in GaN
چکیده انگلیسی
The d0 ferromagnetism in wurtzite GaN is investigated by the first-principle calculations. It is found that spontaneous magnetization occurs if sufficient holes are injected in GaN. Both Ga vacancy and Na doping can introduce holes into GaN. However, Ga vacancy has a high formation energy, and is thus unlikely to occur in a significant concentration. In contrast, Na doping has relatively low formation energy. Under N-rich growth condition, Na doping with a sufficient concentration can be achieved, which can induce half-metallic ferromagnetism in GaN. Moreover, the estimated Curie temperature of Na-doped GaN is well above the room temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 423, 1 February 2017, Pages 281-284
نویسندگان
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