Structural refinement and photoluminescence properties of irregular cube-like (Ca1−xCux)TiO3 microcrystals synthesized by the microwave–hydrothermal method

Oliveira, L.; Moura, A. P. de; Mazzo, Tatiana Martelli; Ramírez, M. A.; Cavalcante, L. S.; Antônio, Selma Gutierrez; Avansi, Waldir; Mastelaro, Valmor Roberto; Longo, Elson; Varela, José Arana

doi:10.1016/j.matchemphys.2012.06.042

Cited by 27 publications

(18 citation statements)

References 58 publications

(65 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…10 reports FE-SEM images of the CT-pure and CT:Eu 3+ powders. In this figures it was observed micro-cube-like patterns in agreement with that the literature [21,24,50]. In Fig.…”

Section: +supporting

confidence: 92%

Europium-doped calcium titanate: Optical and structural evaluations

Mazzo

Pinatti

Macário

et al. 2014

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…10 reports FE-SEM images of the CT-pure and CT:Eu 3+ powders. In this figures it was observed micro-cube-like patterns in agreement with that the literature [21,24,50]. In Fig.…”

Section: +supporting

confidence: 92%

Europium-doped calcium titanate: Optical and structural evaluations

Mazzo

Pinatti

Macário

et al. 2014

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…Oliveira et al [31], also showed that distortion degree can also affected by doping elements, such as Cu 2þ ions, in the A-site of CaTiO 3 matrix.…”

Section: Micro-raman (Mr) Spectroscopy Analysismentioning

confidence: 97%

“…Moreover, such distortions modify the electronic density of the [TiO 6 ] clusters as well as its dipole moment. As a consequence, P 9 Raman mode is also shifted from its usual position [30,31]. From the extended X-ray absorption fine structure (EXAFS) data, Hanajiri et al [32] also show that doping ions (Ce 3þ and Nd 3þ ) content can also modifies the TieO distances in CaTiO 3 matrix.…”

Section: Micro-raman (Mr) Spectroscopy Analysismentioning

confidence: 99%

Investigation of structural and optical properties of CaTiO3 powders doped with Mg2+ and Eu3+ ions

Oliveira

Savioli

Moura

et al. 2015

Journal of Alloys and Compounds

View full text Add to dashboard Cite

a b s t r a c tIn this work, CaTiO 3 powders doped with Mg 2þ ions and CaTiO 3 powders co-doped with Mg 2þ and Eu 3þ ions were prepared by the polymeric precursor method (PPM). These powders were characterized by different characterization techniques to study the influence of Mg 2þ doping as well as Mg 2þ and Eu 3þ codoping in structural and optical properties of CaTiO 3 perovskite-type structure. The Rietveld refinement and Micro-Raman analyses suggested the substitution Mg 2þ and Eu 3þ ions in the A-site of CaTiO 3 perovskite. The influence of Mg 2þ doping can be detected by the displacement of calcium and oxygen atomic positions when compared to the non-doped CaTiO 3 powder. When Eu 3þ ions are added to the Asite of this perovskite the excess of positive charge can be compensated by the formation of calcium vacancies. Luminescence data showed that Ca 1-x Mg x TiO 3 and Ca 1x Mg x/2 Eu 2y/3 TiO 3 powders are potential materials for fabrication of lighting devices based on near-UV and blue LED using an excitation wavelength of 397 and/or 450 nm.

show abstract

“…4). Broad band PL emission is usually observed in systems that possess different paths (involving intermediary levels) in relaxation processes [23].…”

Section: Resultsmentioning

confidence: 99%