Abstract
The synthesis of Y0.9Er0.1Al3(BO3)4 crystalline powders and vitreous thin films were studied. Precursor solutions were obtained using a modified polymeric precursor method using d-sorbitol as complexant agent. The chemical reactions were described. Y0.9Er0.1Al3(BO3)4 composition presents good thermal stability with regard to crystallization. The Y0.9Er0.1Al3(BO3)4 crystallized phase can be obtained at 1,150 °C, in agreement with other authors. Crack- and porosity-free films were obtained with very small grain size and low RMS roughness. The films thickness revealed to be linearly dependent on precursor solution viscosity, being the value of 25 mPa s useful to prepare high-quality amorphous multi-layers (up to ∼ 800 nm) at 740 °C during 2 h onto silica substrates by spin coating with a gyrset technology.
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