Er : YAB nanoparticles and vitreous thin films by the polymeric precursor method

Autor(es)

Maia, Lauro J. Q. ^{[1, 2, 3]} ; Ibanez, Alain ^{[1, 2]} ; Ortega, Luc ^{[1, 2]} ; Mastelaro, Valmor R. ^[3] ; Hernandes, Antonio C. ^[3]

Afiliação do(s) autor(es)

^[1] Univ Grenoble 1, CNRS, Lab Cristallog, F-38042 Grenoble - France

^[2] INPG, F-38042 Grenoble - France

^[3] Univ Sao Paulo, Inst Fis Sao Carlos, Dept Fis & Ciencia Mat, Grp Crescimento Cristais & Mat Ceram, BR-13560970 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF NANOPARTICLE RESEARCH; v. 10, n. 8, p. 1251-1262, DEC 2008.
• Citações Web of Science: 18

Resumo

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. (AU)

• Processo FAPESP: 02/13748-9 - Síntese e caracterização de filmes finos de composição AixR(1-x)(BO3)4 e KAix(1-x)(PO3)4 (R=Er, Nd, Eu) para aplicação em óptica não-linear e luminescência
• Beneficiário: Lauro June Queiroz Maia
• Modalidade de apoio: Bolsas no Brasil - Doutorado