کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1802908 | 1024607 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A study of room-temperature ferromagnetism in transition metal and fluorine-doped spray-pyrolyzed SnO2 thin films
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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
Room-temperature ferromagnetism has been observed in Co- or Mn-doped SnO2 and Co- and F-co-doped SnO2 thin films. A maximum magnetic moment of 0.80μB/Co ion has been observed for Sn0.90Co0.10O1.925âδF0.075 thin films, whereas in the case of Sn1âxMnxO2âδ it was 0.18μB/Mn ion for x=0.10. The magnetization of both Sn1âxCoxO2âδ and Sn1âxCoxO2âyâδFy thin films depends on the free carrier concentration. An anomalous Hall effect has been observed in the case of Co-doped SnO2 films. However, the same was not observed in the case of Mn-doped SnO2 thin films. Carrier-mediated interaction is convincingly proved to be the cause of ferromagnetism in the case of Co:SnO2. It is, however, proposed that no carrier-mediated interaction exists in the case of Mn:SnO2. Present studies indicate that dopants and hence electronic cloud-lattice interaction plays an important role in inducing ferromagnetism.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 8, April 2009, Pages 957-962
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 8, April 2009, Pages 957-962
نویسندگان
Subhash C. Kashyap, K. Gopinadhan, D.K. Pandya, Sujeet Chaudhary,