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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 8: Diamond and related dielectric materials

KFM 8.2: Talk

Wednesday, March 29, 2023, 14:20–14:40, POT 51

Influence of N defects on dielectric properties of diamond — •Theo Scherer — KIT Karlsruhe

Atomistic structures and elastic and dielectric properties including first simulations of loss tangent, tan δ of diamond with small nitrogen impurities can be calculated using the first principles methods. The effect of a single nitrogen substitutional atom on the Raman and IR absorbance spectra is analyzed and compared with other calculations. It is shown that nitrogen defects do not affect tan δ at far IR region used in diamond windows in fusion reactors for plasma heating and stabilization.