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 1001238 _database_code_amcsd 0014301 7.7523 7.7523 5.6198 90 90 120 P31c atom x y z N1 0 0 .5 N2 1/3 2/3 .6351 N3 .6533 .6109 .4592 N4 .3169 .3198 .7288 Si1 .0821 .5089 .6828 Si2 .2563 .1712 .4726