Search Results - "Rezende, Marcos V. S."

Investigating the Correlation between the Microstructure and Electrical Properties of FeSbO4 Ceramics by Moraes, Carlos G. P., Matos, Robert S., Santos, Cledson dos, Ţălu, Ştefan, Attah-Baah, John M., Junior, Romualdo S. Silva, Silva, Marcelo S. da, Rezende, Marcos V. S., Silva, Ronaldo S., Ferreira, Nilson S.

“…FeSbO4 powder was prepared using the solid-state reaction method in this work. Afterward, the dense and porous ceramics were obtained by sintering the pressed…”
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The Trivalent Rare‐Earth Dopant in the KBaPO4 and KSrPO4 Compounds: An Atomistic Simulation Study by Barbosa, Gilberto J., dos S. Rezende, Marcos V.

“…KBaPO4 and KSrPO4 phosphates belong to an important group of luminescent materials that have a wide range of optical applications when doped with trivalent…”
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Insights into the Fe3+ Doping Effects on the Structure and Electron Distribution of Cr2O3 Nanoparticles by Santos, Cledson, Attah-Baah, John M., Junior, Romualdo S. Silva, Mâcedo, Marcelo A., Rezende, Marcos V. S., Matos, Robert S., Ţălu, Ştefan, Trong, Dung Nguyen, da Paz, Simone P. A., Angélica, Rômulo S., Ferreira, Nilson S.

“…Herein, we carefully investigated the Fe3+ doping effects on the structure and electron distribution of Cr2O3 nanoparticles using X-ray diffraction analysis…”
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Rare Earth Doping and Co‐Doping in Lithium Strontium Silicate: A Computational Study by Santos, Paulo C. L., Neto, Otávio M., Santos, Ricardo D. S., dos S. Rezende, Marcos V.

“…Using atomistic simulations based on lattice energy minimization, rare earth doping and co‐doping in Li2SrSiO4 (LSSO) are investigated in terms of energetics…”
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Nd3+-doped LiBaPO4 phosphors for optical temperature sensing within the first biological window: A new strategy to increase the sensitivity by Laia, André S., Hora, Daniela A., dos S. Rezende, Marcos V., Xing, Yutao, Rodrigues, José J., Maciel, Glauco S., Alencar, Márcio A.R.C.

“…•The luminescent thermometry of Nd3+ doped LiBaPO4 microcrystals were investigated.•Efficient thermal probes were obtained using the FIR method.•The population…”
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Influence of Ca2+ co-doping on the luminescence properties of Eu doped Y3Al5O12 phosphors by Silveira, Wellisson S., dos S. Rezende, Marcos V.

“…Eu-doped YAG phosphors co-doped with Ca2+ divalent ions were produced by the modified sol-gel method. The influence of the Ca2+ co-dopant was studied through…”
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Investigating the Thermometric Performance of Inorganic Materials Doped with Nd3+ under Infrared LED Excitation: An Alternative for Deep Tissue Luminescent Thermometry by Laia, André S., Hora, Daniela A., Rezende, Marcos V. dos S., Gomes, Maria A., Brandão-Silva, Antônio C., Santos, Marcos A. C. dos, Dantas, Noelio O., Silva, Anielle C. A., Rodrigues, José J., Valerio, Mário E. G., Macedo, Zélia S., Alencar, Márcio A. R. C.

“…Luminescent thermometers based on the luminescence intensity ratio between two thermally coupled levels have a strong appeal in the biomedical area due to the…”
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Theoretical and computational investigation of the Eu3+ ion local symmetry in fluorides compounds by Ribeiro de Mesquita, Bruno, dos S. Rezende, Marcos V., Couto dos Santos, Marcos A.

“…We employed the computational modelling technique with crystal field models to indicate the local symmetry of the Eu3+ ion in AF2 (A = Ca, Sr and Ba) crystals…”
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Comparing the performance of Nd3+-doped LiBaPO4 phosphors as optical temperature sensors within the first biological window exploiting luminescence intensity ratio and bandwidth methods by Laia, André Scheidegger, Hora, Daniela A., dos S. Rezende, Marcos V., Xing, Yutao, Rodrigues, José Joatan, Maciel, Glauco S., Alencar, Márcio A.R. C.

“…Neodymium doped LiBaPO4 phosphors were studied as luminescent thermometers for operation within the first biological window (BW I). Thermal sensing by…”
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Luminescence varied by selective excitation in Eu3+,Tb3+-doped LiSrPO4 phosphors for W-LEDs applications by Nascimento, Patresio A.M., Silva, Ariosvaldo J.S., Carvalho, Iure S., dos S. Rezende, Marcos V.

“…Tb3+ and Eu3+-doped LiSrPO4 (LSPO) were produced via a modified sol-gel route. Structural and optical characterization was performed by X-ray diffraction (XRD)…”
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Luminescent thermometry with YVO4:Er/Nd: Achieving high sensitivities within the 1st and 2nd biological windows by Laia, André S., Tavares, Francisca J.R., de Oliveira, Matheus S.C., dos S. Rezende, Marcos V., de Fatima Gimenez, Iara, Rodrigues, José J., Alencar, Márcio A.R.C.

“…YVO4:Er3+, Nd3+ powders were prepared by the modified sol gel synthesis route using glucose as chelating agent and characterized by X-ray powder diffraction…”
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Radioluminescence enhancement in Eu3+-doped Y3Al5O12 phosphors by Ga substitution by dos S. Rezende, Marcos V., Paschoal, Carlos William A.

“…•We synthesized Ga-doped YAG nanopowders.•Ga-substitution into YAG follows a Vergard’s law to the structural parameters.•We enhanced the Eu3+ radioluminescence…”
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Effect of europium concentration on its distribution in the host sites of lithium tantalite by de Freitas, Sabrina M., dos S. Rezende, Marcos V.

“…Europium ion incorporation, and the effect of its concentration in the relative population of Eu3+ ions for each host site, was investigated using atomistic…”
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Atomistic Simulation of Intrinsic Defects and Trivalent and Tetravalent Ion Doping in Hydroxyapatite by Santos, Ricardo D. S., Rezende, Marcos V. dos S.

“…Atomistic simulation techniques have been employed in order to investigate key issues related to intrinsic defects and a variety of dopants from trivalent and…”
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Eu doping and reduction into barium orthophosphates by Santos, Ricardo D.S., dos S. Rezende, Marcos V.

“…We investigated Eu3+ and Eu2+ ion incorporation and the reduction of Eu3+ ions in a LiBaPO4 lattice using atomistic simulations based on lattice energy…”
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Effect of the PVA (polyvinyl alcohol) concentration on the optical properties of Eu-doped YAG phosphors by Hora, Daniela A., Andrade, Adriano B., Ferreira, Nilson S., Teixeira, Verônica C., dos S. Rezende, Marcos V.

“…The influence of the polyvinyl alcohol (PVA) concentration on the synthesis and structural, morphological and optical properties of Y3Al5O13: Eu (Eu-doped YAG)…”
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Atomistic simulation and spectroscopy study of the Eu-doped NaCdPO4 compound by Oliveira, Joéslei L., Sousa, Marcos F., Santos, Ricardo D.S., Otsuka, André M., dos Santos, Marcos A.Couto, dos S. Rezende, Marcos V.

“…Atomistic simulation based on lattice energy minimization was performed to study the defect process caused by europium in the NaCdPO4 structure. The…”
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Non-stoichiometric Ce-doped LiAl5O8 phosphors: Synthesis, structural and optical properties by Silva, Ariosvaldo J.S., de Freitas, Sabrina M., Nascimento, Patresio A.M., da S. Carvalho, Iure, Freire, R., Paschoal, Carlos William A., Silva, Ronaldo S., dos S. Rezende, Marcos V.

“…Structural and optical properties of non-stoichiometric pure and doped LiAl5O8 prepared via a simple sol-gel using glucose were investigated. X-ray…”
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X-ray excited optical luminescence changes induced by excess/deficiency lithium ions in rare earth doped LiAl5O8 by Silva, Ariosvaldo J.S., Nascimento, Patresio A.M., Andrade, Adriano B., Sampaio, David V., Moulton, Benjamin J.A., Silva, Ronaldo S., dos S. Rezende, Marcos V.

“…Cerium, terbium and europium doped LiAl5O8 phorphors with different lithium concentrations (deficiency and excess) are synthesized by the sol-gel method using…”
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Energy transfer behavior of Fe3+ to Cr3+ in LiAl5O8 phosphors by Silva, Ariosvaldo J.S., Nascimento, Patresio A.M., Silveira, Wellisson S., Carvalho, Iure da S., Rezende, Marcos V. dos S.

“…We present the energy transfer (ET) and simultaneous excitation (SE) between Cr3+ and Fe3+ ions in LiAl5O8 phosphors prepared by the modified sol-gel method,…”
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