Synthesis and characterization of SnGd_2O_4

摘要

In recent years, many rare earth complex compounds with the formula AB_2O_4, in which A and B are metal ions, have been prepared [1-3]. The AB_2O_4 compounds have many structural types such as spinel, olivine and phenacite. Kugimiya and Steinfink [4] have grouped the known structures for compounds with AB_2O_4 stoichiometry by plotting r_a/r_b versus the bond stretching force constant K_(ab), as shown in Fig.