Gadolinium nanometric colloids were obtained in 2-methoxyethanol by CLD method. The colloids exhibit a low stability at room temperature. The UV spectrum show two bands at 227 and 278 nm, which are stable for several days. The solvent exhibit a band at 205 nm. The colloid concentration is approximate 6.45 x10^-4 M.

The TEM studies reveal a wide average of particles size ranging from 20 to 30 nm. The particles look spherical and the electron diffraction shows the presence of Gd and Gd₂O₃. The EDX analysis gives the presence of Gd metal in the colloid. The colloidal particles exhibits a negative charge.

After solvent evaporation active white powders were obtained. The FTIR of the solid shows bands at 2183 cm^-1 (ν CO), 1728 cm^-1 (ν C=O), 1623 cm^-1 (ν C=C) and 891 cm^-1 (ν CH₂). The ν OCH₃ at 1260 cm^-1 shows the presence of residual 2-methoxyethanol. The FAR-IR exhibit a very broad band at 384 cm^-1 most likely due to metal-metal stretching mode.

The thermogravimetric studies reveal a first thermal decomposition at 105 ºC (water) and a second weight loss at 549 ºC (47%).

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