Erbium Ions Er3
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Vidros de germanato com nanopartículas metálicas e semicondutoras dopados com terras-raras para aplicações em fotônica. / Germanate glasses containing metalic an semiconductor nanoparticles dopes with rare-earth ions for photonic aplicattions.
This work presents a spectroscopic study about Eu3+, Nd3+ and Er3+ rare-earth doped germanate glasses containing metallic and semiconductor nanoparticles (NPs) aiming the development of new materials for photonic applications. These glasses have a large transmission window (400-4500 nm), high refractive index (~ 1.9), low phonon energy (700 cm-1), high mecha
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/09/2010
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2. Preparação e caracterização de materiais ferroelétricos de composição Bi4Ti3O12 contendo Lantânio e Érbio / Synthesis and characterization of Bi4Ti3O12 ferroelectric materials containing Lanthanum and Erbium
This work describes a systematic study of the influence of the lanthanum atom addition in the Bi4Ti3O12 (BIT) phase and the erbium atom addition in the Bi3,25La0,75Ti3O12 (BLT075) phase in terms of their synthesis process and its structural, microstructural and electrical properties. Ceramics of nominal composition Bi4-xLaxTi3O12 (BLTx) with 0 x 2 mol% and B
Publicado em: 2009
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3. Synthesis and characterization of Eu3+ and Er3+ doped SiO2-ZrO2 based transparent glass ceramic nanocomposites via sol-gel process / Síntese e caracterização de nanocompósitos vitrocerâmicos transparentes a base de SiO2-ZrO2 dopados com íons Eu3+ e Er3+ via processo sol-gel
The preparation of transparent glass-ceramic based on the SiO2-ZrO2 doped with Eu3+ and Er3+ ions by the sol-gel methodology was the aim of this work. The structural and optical properties of the systems as a function of the time and temperature of annealing and also zirconium concentration are presented. The sol was prepared in acid solution and left in res
Publicado em: 2008
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4. Produção e caraterização de materiais vítreos de germanato com nanopartículas metálicas e íons de érbio para aplicações em fotônica. / Production and characterization of germanate glasses with metallic nanoparticles and erbium ions for photonic applications.
This work presents the preparation and investigation of the luminescent properties of PbO-GeO2 and PbO-GeO2-Ga2O3 vitreous systems, doped with Erbium ions and containing silver, gold and copper metallic nanoparticles (NPs), for applications in photonic devices. These glasses have a large transmission window (400-4500nm), high refractive index (~1,9) and low
Publicado em: 2007
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5. Fabrication and characterization of erbium-doped tellurite glass microstrutured fibers / Fabricação e caracterização de fibras microestruturdas de vicros teluritos dopados com erbio
Neste trabalho três tipos de vidro telurito são estudados, fabricados e caracterizados, tendo em vista a fabricação de fibras ópticas de cristal fotônico. Basicamente, dois processos de fabricação de fibras de cristal fotônico foram considerados: 1) Empilhamento e puxamento, e 2) Extrusão. Os vidros teluritos fabricados são: 0,77TeO2¿0,23WO3; 0,7
Publicado em: 2007
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6. Amplificadores Ãpticos, estudos de polarizaÃÃo e geraÃÃo de pulso usando processos paramÃtricos em fibras Ãpticas
The recent telecommunication development can be, to a large extent, attributed to the capacity of transmitting information (video, sound and data) at high transmission rates (Tbits/s) through the optical fiber. The constant advances in the technological development of active and passive devices based on optical fibers have enabled a steady increase in commun
Publicado em: 2007
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7. Estudo de vidros fosfatos dopados com terras raras para aplicação em fibras ópticas e guias de ondas planares / Estudo de vidros fosfatos dopados com terras raras para aplicação em fibras ópticas e guias de ondas planares
In this work, the thermal and optical properties is of the system P2O5 - ZnO - Al2O3 - AO - PbO - La2O3 (mol %) + XEr2O3 [A = Ba; Mg; X = 0; 1; 2; 3; 4; 5 (wt %)] was studied aiming at applications in optical fibres and planar waves-guides, as optical amplifiers. Such system is unknown and of low cost if compared with others, for example, those made with tel
Publicado em: 2006
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8. Estudo de vidros fosfatos dopados com terras raras para aplicaÃÃo em fibras Ãpticas e guias de ondas planares / Estudo de vidros fosfatos dopados com terras raras para aplicaÃÃo em fibras Ãpticas e guias de ondas planares
Neste trabalho estudou-se as propriedades tÃrmicas à Ãpticas do sistema P2O5 â ZnO â Al2O3 â AO â PbO â La2O3 (mol %) + XEr2O3 [A= Ba; Mg; X=0; 1; 2; 3; 4; 5 (peso%)], visando aplicaÃÃes em fibras Ãpticas e guias de ondas planares, como amplificadores Ãpticos. Tal sistema à inÃdito e de baixo custo se comparado com outros, por exemplo, aqueles
Publicado em: 2006
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9. Efeitos nÃo lineares em lÃquidos orgÃnicos e meios nanoestruturados
In this thesis, we report studies of nonlinear transverse effects in organic liquids, carbon disulfide (CS2) and dimetil sulfoxide (DMSO), and of fluorescent emission effects in nanostructured media, more specifically, frequency upconversion in erbium doped barium titanate nanocrystals (BaTiO3:Er3+) and laserlike emission from inverted opal nanostructure of
Publicado em: 2004
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10. Planar waveguides by ionic exchange in glasses tellurite doped with ions of erbium / Guias de onda por troca ionica em vidros teluritos dopados com ions de erbio
This work reports the preparation of planar waveguides by ionic exchange in glasses tellurite doped with íons of erbium whose compositions are, 14Na2O-25W O3 - 60TeO2 - 1Er2O3 (mol%) and 2GeO2 - 10N a2O - 12ZnO - 75TeO2 - 1Er2 O3 (mol%), have been prepared multi-mode and single-mode waveguides, the depths of the waveguides can be controlled by the variation
Publicado em: 2003
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11. Investigação de Er3+ nos dois sítios cristalográficos de Gd2SiO5 através da fotoluminescência resolvida no tempo
Gadolinium oxyortho-silicate, Gd2SiO5, presents a monoclinic structure with two crystallographic sites in which Gd3+ ions are equally distributed with coordination numbers CN, 7 and 9, respectively. By doping this host with Er3+ it is possible to distinguish and attribute the two sites by means of lifetime determination of the 4S3/2 state, (in this case, Er3
Química Nova. Publicado em: 2000-12
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12. Compostos de adição entre hexafluorofosfatos de ítrio e lantanídeos (III) e a N,N - Dimetilacetamida (DNA) / N,N-Dimethylacetamide adducts of lanthanide hexafluorphosphates
The preparation and characterization of adducts between lanthanide hexafluorophosphates and DMA are described. According to elemental analysis the compounds present two general compositions: Ln(PF6)3.7DMA (Ln= La-Ho) and Ln(PF6)3.6DMA (Ln= Er-Lu, Y). The compounds are crystalline, not hygroscopic and melt between 115-125°C. They are soluble in water, nitrom
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/1977