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Figure 3
Geometrically optimized interface structures of β-tridymite SiO2/4H-SiC(Si-face) with nitro­gen: (a) substitutional C site at the interface and (b) at the SiC interior; (c) interstitial sites at the SiC and (d) at the SiO2 side; (e) substitutional Si site at the SiC interior. Yellow, gray, red and blue denote the Si, C, O and N atoms, respectively. The crystal orientation for SiC is also depicted.

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