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 1001241 _database_code_amcsd 0014304 7.7809 7.7809 5.6407 90 90 120 P31c atom x y z N1 0 0 .5 N2 1/3 2/3 .6368 N3 .657 .6142 .4674 N4 .3102 .316 .7279 Si1 .0808 .5182 .6898 Si2 .2506 .1688 .4741