Quantitative phase analysis of boron nitride nanotubes using Rietveld refinement

被引:6
作者
Kim, YI
Jung, JK
Ryu, KS
Nahm, SH
Gregory, DH
机构
[1] Korea Res Inst Stand & Sci, Taejon 305600, South Korea
[2] Univ Nottingham, Sch Chem, Nottingham NG7 2RD, England
关键词
D O I
10.1088/0022-3727/38/8/004
中图分类号
O59 [应用物理学];
学科分类号
摘要
Crystalline boron nitride nanotubes (BNNTs) with an average outer diameter of about 40 nm and several micrometres in length were synthesized by chemical vapour deposition from boron and magnesium oxide. Rietveld refinement and B-11 solid-state nuclear magnetic resonance (NMR) spectroscopy were employed to quantitatively determine the phase of synthesized BNNTs. The structural parameters for the BNNTs were determined by Rietveld refinement against powder x-ray diffraction data with a model based on the results of NMR analysis. The final weighted R-factor, R-wp, was 6.08% and the goodness-of-fit indicator, S (= R-wp/R-e), was 1.52. The BNNTs consisted of hexagonal BN, rhombohedral BN and MgO with refined weight fractions of 76.3%, 21.2% and 2.5%, respectively.
引用
收藏
页码:1127 / 1131
页数:5
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