AM_Si3N4 Formula: Si3 N4 Name: Si3N4 Unit cell: 7.6093 7.6093 2.9079 90.0 90.0 120.0 , V=145.81 Space group: P63/M (176)

Yang P , Fun H-K , Rahman I A , Saleh M I , Ceramics International , 21 (1995) p.137-142, Two phase refinements of the structures of a-Si3N4 and B-Si3N4 made from rice, husk by Rietveld analysis, Sample: Beta phase