(1) INFM and DCCI, Via Dodecaneso 31, 16146 Genova, Italy;(2) NIMS, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan;(3) INSTM and DCCI, Via Dodecaneso 31, 16146 Genova, Italy;(4) CNR-IMEM, Via Dodecaneso 33, 16146 Genova, Italy
Abstract:
Several (Gd1−xNdx)2[C2O4]3·nH2O samples (0≤x≤1) were prepared by a coprecipitation method: the precipitation is quantitative and all the samples are homogeneous in stoichiometry. XRD analyses have shown that a complete solid solution is formed over the whole range of compositions. The dried Gd rich oxalates have initially a low water content which gradually increases with the Nd content. All the oxalates decompose in O2 around 700°C either into a single mixed oxide or in a mixture of oxides through several steps, which can be ascribed to the loss of water and CO2.