Incorporation of Nitrogen in Alkaline-Earth Hexaaluminates with a β-Alumina- or a Magnetoplumbite-Type Structure

A feasibility study is presented concerning the incorporation of N 3 - in alkaline-earth aluminates with a magnetoplumbite- or β-alumina-type structure. A comparison is made with Mg 2+ -substituted alkaline-earth aluminates with a magnetoplumbite or β-alumina-type structure. Various techniques such as X-ray diffraction, luminescence spectroscopy (on Eu 2+ -doped samples), 27 Al magic angle spinning nuclear magnetic resonance spectroscopy, and IR spectroscopy are used in order to distinguish between the magnetoplumbite- and the β-alumina-type structure as well as to investigate the incorporation of N 3 - and Mg 2+ . The incorporation of N 3 - is possible for materials with a β-alumina-type structure, resulting in BaAl 11 O 16 N, but negligible for materials with a magnetoplumbite-type structure (Sr and Ca).