کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1522678 | 995314 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural, electronic, and mechanical properties of niobium nitride prepared by thermal diffusion in nitrogen
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Structural, electronic, and mechanical properties of niobium nitride prepared by thermal diffusion in nitrogen Structural, electronic, and mechanical properties of niobium nitride prepared by thermal diffusion in nitrogen](/preview/png/1522678.png)
چکیده انگلیسی
Niobium nitride (NbNx) was prepared by heating Nb sample in a nitrogen atmosphere (133 Pa) at a temperature of 900 °C. The structural, electronic, nanomechanical and surface properties of the deposited layers have been determined as a function of processing time. The results suggested that the niobium nitride was crystalline in the single phase of hexagonal β-Nb2N and the nitrogen-to-niobium ratio was found to be in the range of 0.67 ± 0.03 to 0.74 ± 0.03. Longer processing times resulted in layers with higher nitrogen-to-niobium ratios. The mean grain size of these nitrides was about 18 nm. The valence band photoemission and calculated density of state spectra characterized by two peaks were associated with N 2p-Nb 4d hybridization. X-ray photoemission spectra of Nb 3p and 3d core levels revealed a strong interaction with nitrogen along with binding energy shift. As the processing time was increased, the film growth continued with consistent improvement in hardness and modulus.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 141, Issue 1, 15 August 2013, Pages 393-400
Journal: Materials Chemistry and Physics - Volume 141, Issue 1, 15 August 2013, Pages 393-400
نویسندگان
Yüksel Ufuktepe, Ashraf Hassan Farha, Shin-ichi Kimura, Tetsuya Hajiri, Faruk KaradaÄ, Md Abdullah Al Mamun, Abdelmageed A. Elmustafa, Ganapati Myneni, Hani E. Elsayed-Ali,