As Ga O4 Philippot E, Armand P, Yot P, Cambon O, Goiffon A, McIntyre G, Bordet P Journal of Solid State Chemistry 146 (1999) 114-123 Neutron and x-ray structure refinements between 15 and 1083 K of piezoelectric gallium arsenate, Ga As O4: temperature and pressure behavior compared with other alpha-quartz materials _cod_database_code 1009001 _database_code_amcsd 0016863 4.9942 4.9942 11.3816 90 90 120 P3_121 atom x y z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ga1 .45092 0 1/3 .00865 .00740 .00711 0 0 -.00068 As1 .44933 0 .8333 .00807 .00641 .00656 0 0 -.00048 O1 .39910 .31683 .38363 .01784 .01311 .01145 .01064 -.00459 -.00442 O2 .39816 .29426 .87213 .01810 .01255 .01202 .01073 -.00471 -.00424