Chemical stability of carbon-based inorganic construction materials for in situ x-ray measurements of ammonothermal crystal growth of nitrides - Schimmel, Saskia; Meisel, Magnus; Hertweck, Benjamin; Steigerwald, Thomas; Nebel, Christoph; Alt, Nicolas; Schlücker, Eberhard; Wellmann, Peter (5th German-Swiss Conference on Crystal Growth, 2017)