title: Characterization of zirconia- and niobia-silica mixture coatings produced by ion-beam sputtering.
abstract: ZrO2-SiO2 and Nb2O5-SiO2 mixture coatings as well as those of pure zirconia (ZrO2), niobia (Nb2O5), and silica (SiO2) deposited by ion-beam sputtering were investigated. Refractive-index dispersions, bandgaps, and volumetric fractions of materials in mixed coatings were analyzed from spectrophotometric data. Optical scattering, surface roughness, nanostructure, and optical resistance were also studied. Zirconia-silica mixtures experience the transition from crystalline to amorphous phase by increasing the content of SiO2. This also results in reduced surface roughness. All niobia and silica coatings and their mixtures were amorphous. The obtained laser-induced damage thresholds in the subpicosecond range also correlates with respect to the silica content in both zirconia- and niobia-silica mixtures.
authors: Laser Research Center, Vilnius University, Vilnius, Lithuania. andrius.melninkaitis@ff.vu.lt
authors: Andrius
authors: A
authors: Melninkaitis
authors: Tomas
authors: T
authors: Tolenis
authors: Lina
authors: L
authors: Mažulė
authors: Julius
authors: J
authors: Mirauskas
authors: Valdas
authors: V
authors: Sirutkaitis
authors: Benoit
authors: B
authors: Mangote
authors: Xinghai
authors: X
authors: Fu
authors: Myriam
authors: M
authors: Zerrad
authors: Laurent
authors: L
authors: Gallais
authors: Mireille
authors: M
authors: Commandré
authors: Simonas
authors: S
authors: Kičas
authors: Ramutis
authors: R
authors: Drazdys