کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1789787 | 1524393 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
HPHT synthesis of N-HÂ co-doped diamond single crystals
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
In this paper, a series of nitrogen and hydrogen elements (N-H) co-doped diamond single crystals were synthesized in the NiMnCo-C system with melamine (C3N6H6) additive by temperature gradient growth (TGG) method under high-pressure and high-temperature (HPHT). High nitrogen and hydrogen growth environment obviously reduces the growth rate of the diamond. The synthetic diamond crystals are octahedral shape with a green or dark green color. This results indicate that the morphology of the synthetic N-H co-doped gem-diamond can be well-controlled by TGG method. Fourier transform infrared spectroscopy (FTIR) indicate that high-quality diamond single crystals with nitrogen concentrations up to 2100Â ppm have been successfully synthesized and the hydrogen related peaks at 2850Â cmâ1 (sp3-CH3) and 2920Â cmâ1 (sp3-CH2-) are found in these synthetic diamond. Meanwhile, with the increasing of C-centers the nitrogen atoms aggregate and form into A-centers in these synthetic diamonds. This is the highest quality of N-H co-doped gem-diamond single crystal synthesized in high nitrogen and high hydrogen growth environment reported so far.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 436, 15 February 2016, Pages 34-39
Journal: Journal of Crystal Growth - Volume 436, 15 February 2016, Pages 34-39
نویسندگان
Chao Fang, Xiaopeng Jia, Ning Chen, Yadong Li, Longsuo Guo, Liangchao Chen, Hong-an Ma, Xiaobing Liu,