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Artigo Produção Nacional Revisado por pares
BIBTEX RIS

Surface crystallization of β-BaB2O4 phase using a CO2 laser source

2002; Elsevier BV; Volume: 306; Issue: 3 Linguagem: Inglês

10.1016/s0022-3093(02)01415-1

ISSN

1873-4812

Autores

Adelaine F Maciente, Valmor Roberto Mastelaro, André Luiz Martinez, Antônio Carlos Hernandes, Carlos A.C Carneiro,

Tópico(s)

Photorefractive and Nonlinear Optics

Resumo

This letter describes decrystallization process of the β-BaB2O4 phase on the surface of 63BaO–26B2O3–11TiO2 glassy sample when irradiated by a CO2 laser beam for 30–40 s, using a laser power of ≈1.7 W. An analysis by optical microscopy of the irradiated region showed that the glass surface contained crystallites with the same morphology as those observed after traditional crystallization in an electric furnace. However, the crystal growth rate and the crystallite sizes appeared to be higher than those obtained by heating in an electric furnace. X-ray diffraction of the irradiated region showed a preferential orientation of the β-BaB2O4 crystallites on the glass surface.

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