Er2 Si3.333 Auffret S, Pierre J, Lambert B, Soubeyroux J, Chroboczek J Physica B 162 (1990) 271-280 Crystallographic and magnetic structures of Er3Si5 _cod_database_code 1008488 _database_code_amcsd 0016381 6.538 3.793 4.082 90 90 90 Pmmm atom x y z occ Er1 0 0 .5 Er2 .5 .5 .5 Si1 .897 .5 0 Si2 .328 0 0 .667