Several (Gd1–xNdx)2[C2O4]3·nH2O samples (0x1) 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.
Synthesis and thermal decomposition of mixed Gd – Nd oxalates
ARTINI, CRISTINA;COSTA, GIORGIO;CARNASCIALI, MARIA;MASINI, ROBERTO
2008-01-01
Abstract
Several (Gd1–xNdx)2[C2O4]3·nH2O samples (0x1) 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.
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