Nierite Billy M, Labbe J, Selvaraj A, Roult G Materials Research Bulletin 18 (1983) 921-934 Modifications structurales du nitrure de silicium en fonction de la temperature _cod_database_code 1001242 _database_code_amcsd 0014305 7.7853 7.7853 5.6431 90 90 120 P31c atom x y z N1 0 0 .5 N2 1/3 2/3 .6331 N3 .6531 .611 .457 N4 .3184 .3088 .7275 Si1 .0806 .5005 .6775 Si2 .2386 .1547 .4642