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- W4213318598 abstract "Boron-doped diamond single crystals of cubo-octahedral habit have been obtained by temperature gradient method at high pressures and high temperatures (HPHT) in Fe-Al-B-C system, and multisectoral plates of different orientations have been produced. Spatial distribution of uncompensated boron impurity and surface potential through the interfaces of different growth sectors of diamond plates have been studied by scanning Fourier transform infrared (FTIR) and Raman micro-spectroscopy, as well as scanning spreading resistance microscopy (SSRM) and Kelvin-probe force microscopy (KPFM). FTIR mapping showed strongly non-uniform growth-sector dependent distribution of uncompensated boron impurity gradually decreasing in a sequence {111} → {110} → {113} → {001} from ~7 · 10 18 cm −3 down to 2 · 10 17 cm −3 . Micro-Raman mapping is used to reveal the submicron distribution of structural quality and boron content through the interfaces of different growth sectors. The inter-sectoral jumps of the surface potential in the axial and radial directions of the growth sectors were studied by KPFM, their theoretical estimates are obtained, and the features of the band structure of the inter-sector interfaces are revealed. A high level of structural perfection of inter-sectoral boundaries without electrically active defects is demonstrated. • High structural quality of HPHT-diamond single crystals with a cubo-octahedral habit synthesized in the Fe-Al-B-C growth system is demonstrated. • Significant inter-sectoral heterogeneity of boron content decreasing from ~7·10 18 cm −3 to ~2·10 17 cm −3 in a sequence {111} → {110} → {113} → {001} is shown. • Quantitative difference in electric potential between different growth sectors of boron doped HPHT diamonds was estimated. • Clear coherent inter-sectoral boundaries with step-like difference in electric potential are promising for the development of dedicated diamond-based electronic devices." @default.
- W4213318598 created "2022-02-24" @default.
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- W4213318598 date "2022-04-01" @default.
- W4213318598 modified "2023-10-01" @default.
- W4213318598 title "Correlated Kelvin-probe force microscopy, micro-FTIR and micro-Raman analysis of doping anisotropy in multisectorial boron-doped HPHT diamonds" @default.
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- W4213318598 doi "https://doi.org/10.1016/j.diamond.2022.108927" @default.
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