Artículos de revistas
Er : YAB nanoparticles and vitreous thin films by the polymeric precursor method
Fecha
2008Registro en:
JOURNAL OF NANOPARTICLE RESEARCH, v.10, n.8, p.1251-1262, 2008
1388-0764
10.1007/s11051-007-9349-9
Autor
MAIA, Lauro J. Q.
IBANEZ, Alain
ORTEGA, Luc
MASTELARO, Valmor Roberto
HERNANDES, Antonio Carlos
Institución
Resumen
The synthesis of Y(0.9)Er(0.1)Al(3)(BO(3))(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. Y(0.)9Er(0.1)Al(3)(BO(3))(4) composition presents good thermal stability with regard to crystallization. The Y(0.9)Er(0.1)Al(3)(BO(3))(4) crystallized phase can be obtained at 1,150 degrees 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 similar to 800 nm) at 740 degrees C during 2 h onto silica substrates by spin coating with a gyrset technology.