Synthesis of Pr3+-doped CaTiO3 using polymeric precursor and microwave-assisted hydrothermal methods: A comparative study

Gonçalves, Roger; Lima, Alan R. F.; Godinho, Mário; Moura, A. P. de; Espinosa, J. W. M.; Longo, Elson; Marques, A. P. A.

doi:10.1016/j.ceramint.2015.06.121

Cited by 20 publications

(7 citation statements)

References 26 publications

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“…In and strains in Ca 1Àx Cu x TiO 3 powders and also have strong an influence on its optical properties [30]. However, it can be noted that the lattice parameters and unit cell volumes obtained through the XRD refinement are very close to those published in the literature for the CTO materials [30][31][32]. Moreover, changes in the crystallization, heating rates, heat-treatment temperature, processing time, or crystal growth process can influence the structural distortion degree of the octahedral TiO 6 clusters within CTO matrix [33,34].…”

Section: Resultssupporting

confidence: 66%

Influence of Cu-doping on the structural and optical properties of CaTiO3 powders

Oliveira

Moura

Porta

et al. 2016

Materials Research Bulletin

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A B S T R A C THere, we report on the effect of chemical substitution on the structural and optical properties of Cudoped CaTiO 3 (CTO) polycrystalline powders synthesized by the polymeric precursor method. Our findings are discussed based on the structural order-disorder effects originating from the modification of the Ca 1Àx Cu x TiO 3 microcrystal matrix. These results may elucidate the compositional modulation and methods of controlling the structural design, as well as reveal the changes in the optical behavior of this system at an atomic level.

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Section: Resultssupporting

confidence: 66%

Influence of Cu-doping on the structural and optical properties of CaTiO3 powders

Oliveira

Moura

Porta

et al. 2016

Materials Research Bulletin

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“…Here, we can observe a broadband covering the visible electromagnetic spectra within the range of 400-600 nm centered at 450 nm (blue emission). This feature is likely to be associated with the presence of defects known to be typical of multiphonon and multilevel emission processes [42]. The broadband model suggests that the PL emission presented by semiconductor materials results of electronic transitions due to the distortion in the crystalline lattice [40].…”

Section: Resultsmentioning

confidence: 96%

Lithium lanthanum titanate perovskite ionic conductor: Influence of europium doping on structural and optical properties

Fernandes

Gasparotto

Teixeira

et al. 2018

Ceramics International

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The present study reports the insertion of europium ions into the network of lithium lanthanum titanate, La 0.5 Li 0.5 TiO 3 , powders. The materials were prepared efficiently via the Pechini method and were characterized using thermogravimetric analyses, X-ray diffraction, high-resolution electron microscopy and photoluminescence spectroscopy. The results obtained demonstrate the high structural disorder of La 0.5 Li 0.5 TiO 3 (LLTO) as well as the different environments noticed by Eu 3+ ions in the La 0.5 Li 0.5 TiO 3 host lattice. Our results are essentially important once they unfold a better understanding of the complex nature of La 0.5 Li 0.5 TiO 3 compounds structure.

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“…Studies on intermediate levels in band gap and structural order-disorder showed a decrease in the optical band gap according to the structural organization 41 . Our group has postulated that the PL intensity in inorganic oxides is also associated with the thermal treatment history, structural order-disorder, and electronic levels in the band gap 41,14 . Moreover, an earlier study has demonstrated the synthesis of rare-earth doped Gd 2 O 3 nanoparticles 42 .…”

Section: Resultsmentioning

confidence: 99%

“…This method provides a simple and fast approach for the large-scale production of new emergent complex functional materials. In addition, it also enables the shape-controlled synthesis of micro-and/or nanomaterials at a lower cost, for their industrial exploitation with unprecedented capabilities in the new technologies [9][10][11][12][13][14] .…”

Section: Introductionmentioning

confidence: 99%

Novel Gd(OH)3, GdOOH and Gd2O3 Nanorods: Microwave-Assisted Hydrothermal Synthesis and Optical Properties

et al. 2016

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We present a study of the controlled synthesis and optical properties of single-crystals Gd(OH) 3 , GdOOH and Gd 2 O 3 nanorods. In this work, Gd(OH) 3 nanorods were synthesized by a simple and fast microwave-assisted hydrothermal method. This process combined with the thermal decomposition oxidation of Gd(OH) 3 nanorods as precursors enabled the preparation of single-crystalline GdOOH and Gd 2 O 3 structures with well-defined morphology at low temperatures. The crystal structure dependence on the optical properties was investigated. We observed a green shift effect on the photoluminescence (PL) emission spectra from Gd(OH) 3 to Gd 2 O 3 nanorods, which can be attributed to different types of surface defects, as well as intrinsic properties that contribute significantly to the modified PL behavior.

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Synthesis of Pr3+-doped CaTiO3 using polymeric precursor and microwave-assisted hydrothermal methods: A comparative study

Cited by 20 publications

References 26 publications

Influence of Cu-doping on the structural and optical properties of CaTiO3 powders

Influence of Cu-doping on the structural and optical properties of CaTiO3 powders

Lithium lanthanum titanate perovskite ionic conductor: Influence of europium doping on structural and optical properties

Novel Gd(OH)3, GdOOH and Gd2O3 Nanorods: Microwave-Assisted Hydrothermal Synthesis and Optical Properties

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