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| Ertürk, Emre |
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| Azevedo, Nuno Monteiro |
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Rey-García, Francisco
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Publications (9/9 displayed)
- 2018Microstructural characterization and tribological behavior of Laser Furnace processed ceramic tilescitations
- 2017Shifting Lu2SiO5 crystal to eutectic structure by laser floating zonecitations
- 2017Laser Zone Melting and microstructure of waveguide coatings obtained on soda‐lime glasscitations
- 2016Laser treatment of nanoparticulated metal thin films for ceramic tile decoration
- 2014Metallic coatings obtained by Pulsed Laser Deposition through a dynamic prism system
- 2014Effect of Laser Treatments on the Microstructure and Physical Properties of Bi-2212 and Gd-123 Bulk Samples
- 2013Planar Step-Index Waveguides Obtained via Sol-Gel Synthesis from Organometallic Precursorscitations
- 2012Structural and optical characterization of ZrO2:CeO2 slab waveguides obtained via Sol-Gelcitations
- 2011Sol-gel coatings: an alternative route for producing planar optical waveguidescitations
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article
Shifting Lu2SiO5 crystal to eutectic structure by laser floating zone
Abstract
Starting from stoichiometric mixtures of lutetium and silicon oxides, Lu2SiO5 (LSO) crystals to eutectic ceramic rods were obtained using the laser floating zone (LFZ) technique in air at growth rates ranging from 200 to 5 mm/h. The newly obtained eutectic is formed by Lu2O3 fibrils and/or lamellae into a LSO matrix being its formation induced by a SiO2 evaporation process during the LFZ growth.Scanning electron microscopy (SEM) and Raman spectroscopy studies allowed observing how growth rate affects microstructural evolution, namely the transition from single crystal to eutectic. SEM observations show that the eutectics present alternated monophasic oxyorthosilicate regions with biphasic Lu2SiO5/Lu2O3 ones identified by X-Ray diffraction as C2/c monoclinic Lu2SiO5 and Ia3 cubic lutetium oxide.While the luminescence phenomena were found to be only dependent on the excitation energy, a pronounced UV light-induced reversible photochromic effect was observed in the samples grown at slower rates.