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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Heavy metal oxide glass-ceramics containing luminescent gallium-garnets single crystals for photonic applications

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Author(s):
Souza, A. E. [1] ; Antonio, S. G. [1] ; Ribeiro, S. J. L. [1] ; Franco, D. F. [1] ; Galeani, G. [2] ; Cardinal, T. [3] ; Dussauze, M. [4] ; Nalin, M. [1]
Total Authors: 8
Affiliation:
[1] Sao Paulo State Univ, Inst Chem, UNESP, Rua Prof Francisco Degni 55, BR-14800060 Araraquara, SP - Brazil
[2] Univ Sao Paulo, Sao Carlos Inst Phys, Sao Carlos, SP - Brazil
[3] Univ Bordeaux, ICMCB, CNRS, UPR 9048, Pessac - France
[4] Univ Bordeaux, ISM, CNRS, UPR 5803, Pessac - France
Total Affiliations: 4
Document type: Journal article
Source: Journal of Alloys and Compounds; v. 864, MAY 25 2021.
Web of Science Citations: 0
Abstract

Glass-ceramics containing rare earth gallium garnets were obtained using glass compositions as reactional medium. This work reports on the synthesis, and structural, morphological, and optical characterizations of Er3+ and Tm3+-doped Yb3Ga5O12 crystals prepared from controlled cooling of heavy metal oxide glass melts. Micrometric cubic crystals were obtained by controlling the cooling of a rare earth-supersaturated glassy composition melted at high temperature. Crystals with sizes ranging between 5 and 150 mu m were formed into the glass matrix. A gallium garnet phase corresponding to space group Ia-3d was identified by X-ray diffraction and confirmed by Rietveld simulations. The morphology of crystals was studied by optical and scanning electron microscopies, while chemical elements were mapped by electron dispersive X-Ray spectroscopy. The glass phase was studied by XRD, thermal analysis and Raman spectroscopy. The optical properties of both glass and glass-ceramic materials were evaluated by UV-Vis and luminescence spectroscopies. Micro-luminescence measurements confirmed that rare earths were incorporated into the crystalline phase. Intense upconversion emissions of Er3+ (550 and 660 nm) and Tm3+ (800 nm) were observed when the glass-ceramics were pumped at 980 nm. These new glass-ceramics are excellent candidates for the development of photonic devices. (C) 2021 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass
Grantee:Edgar Dutra Zanotto
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 19/01223-0 - Study of optical and magnetic properties of heavy metal oxide glasses and their applications in 3D printing
Grantee:Marcelo Nalin
Support Opportunities: Scholarships abroad - Research