The formula for samarium iron garnet (Sm3Fe5O12) may be written in the form Sm3Fe2a Fe3dO12 where the superscripts a, c, and d represent different sites on which the Sm3+ and Fe3+ ions are located. The spin magnetic moments for the Sm3+ and Fe3+ ions positioned in a and c sites are oriented parallel to one another and antiparallel to the Fe3+ ions in d sites. Compute the number of Bohr magnetons associated with each Sm3+ ion, given the following information: (1) each unit cell consists of eight formula (Sm3Fe5O12) units; (2) the unit cell is cubic with an edge length of 1.2529 nm; (3) the saturation magnetization for this material is 1.35 × 105A/m; and (4) there are 5 Bohr magnetons associated with each Fe3+ ion.