Synthesis of Magnesium Silicon Nitride by the Nitridation of Powders in the Magnesium-Silicon System

Red emission from Mn2+ on a tetrahedral site in MgSiN2

“…The hexagonal wurtzite structure is distorted because of the presence of two different metal atoms and displacement of nitrogen atoms from the ideal positions in the wurtzite structure [30,31]. In the crystal structure of MgSiN 2 , both Mg and Si atoms are tetrahedrally coordinated by N. The study for MgSiN 2 has been concentrated on preparation, characterization [27][28][29][30][31][32], mechanical and thermal properties [27][28][29], electronic structure calculations [33], as well as the luminescence properties of the rareearth-doped materials [11,12]. To the best of our knowledge, no investigations have been focused on studying the photoluminescence properties of Mn 2+ in MgSiN 2 host lattice except for a paper focused on studying luminescence properties of Mn 2+ in MgSiN 2 under cathode ray excitation [34].…”

Reaction sintering of fluorine-doped MgSiN2

“…The peaks at 575 and 635 C are attributed to the direct nitridation of Mg to form Mg 3 N 2 , promoted by the presence of silicon (first peak) and Si 3 N 4 (second peak). 6,7 The weight gain on the TG curve to the main exothermic reaction at $ 930 C is due to the formation of Mg 3 N 2 ( Fig. 1), which was confirmed by XRD analysis.…”

“…Single-phase MgSiN 2 with low oxygen content (0.76 mol%) was successfully prepared by nitridation of Mg 2 Si. 7 The disadvantage of this method is the high excess of magnesium in the starting powder.…”

Synthesis of MgSiN<sub>2</sub> Powders from the Mg-Si System

“…Uchlda et al [26] obtained single-phase MgSiN 2 by nitridation of Mg 2 Si at 1400˚C for 1 h. Bruls et al [27] used Mg 3 N 2 /Si 3 N 4 as starting mixture to obtain MgSiN 2 with oxygen content of only 0.1 ± 0.1 wt%. Mg and Si have also been used as raw materials to synthesize MgSiN 2 at 1250˚C for 16 h; however, no single-phase products were obtained.…”