کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8156287 | 1524844 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrothermal synthesis and magneto-optical properties of Ni-doped ZnO hexagonal columns
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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: Hydrothermal synthesis and magneto-optical properties of Ni-doped ZnO hexagonal columns Hydrothermal synthesis and magneto-optical properties of Ni-doped ZnO hexagonal columns](/preview/png/8156287.png)
چکیده انگلیسی
Single crystal Zn1âxNixO (x=0, 0.02, 0.04, 0.06) hexagonal columns have been synthesized by a simple hydrothermal route. The hexagonal columns of the products are about 3 μm in diameter and about 2 μm in thickness. X-ray diffraction (XRD), Ni K-edge XANES spectra and TEM indicate that the as-prepared samples are single-crystalline wurtzite structure and no metallic Ni or other secondary phases are found in the hexagonal columns. Optical absorption and Raman results further confirm the incorporation of Ni2+ ions in the ZnO lattice. Magnetic measurements indicate that the Zn1âxNixO hexagonal columns exhibited obvious ferromagnetic characteristic at room temperature. The coercive fields (Hc) were obtained to be 135.3, 327.79 and 127.29 Oe for x=0.02, 0.04 and 0.06, respectively. The ferromagnetism was assumed to originate from the exchange interaction between free carriers (holes or electrons) from the valence band and the localized d spins on the Ni ions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 377, 1 March 2015, Pages 308-313
Journal: Journal of Magnetism and Magnetic Materials - Volume 377, 1 March 2015, Pages 308-313
نویسندگان
Xingyan Xu, Chuanbao Cao,