کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10714158 | 1025571 | 2012 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Room temperature magnetism of Fe doped CdS nanocrystals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Room temperature magnetism of Fe doped CdS nanocrystals Room temperature magnetism of Fe doped CdS nanocrystals](/preview/png/10714158.png)
چکیده انگلیسی
Undoped and Fe doped CdS nanocrystals with Fe content of 2-5 at% of average crystallite size 1.2-2 nm have been obtained using chemical co-precipitation method with 2-mercaptoethonal as capping agent at 80 °C. X-ray diffraction (XRD) results showed that the undoped CdS nanocrystals were in mixed phase of cubic and hexagonal, where as the doped CdS nanocrystals were in hexagonal phase. Room-temperature ferromagnetism has been observed in Fe-doped CdS nanocrystals. Magnetic studies indicated diamagnetism in undoped, ferromagnetism in lightly doped (2 and 3 at%) and paramagnetism in samples of higher Fe content (4 and 5 at%). The substitutional incorporation of Fe3+ ion in Cd2+ sites was reflected in structural and electron paramagnetic resonance (EPR) measurements. Isolated as well as interacting Fe3+ ions are observed in EPR.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 407, Issue 12, 15 June 2012, Pages 2084-2088
Journal: Physica B: Condensed Matter - Volume 407, Issue 12, 15 June 2012, Pages 2084-2088
نویسندگان
G. Murali, D. Amaranatha Reddy, B. PoornaPrakash, R.P. Vijayalakshmi, B.K. Reddy, R. Venugopal,