Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Iure da S. Carvalho"'
Autor:
Ariosvaldo J.S. Silva, Patresio A.M. Nascimento, Wellisson S. Silveira, Iure da S. Carvalho, Marcos V. dos S. Rezende
Publikováno v:
Journal of Alloys and Compounds. 927:166959
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bc29b8ab2cb2c8d97a6f0979d71f1a1
https://doi.org/10.1016/j.jallcom.2022.166959
https://doi.org/10.1016/j.jallcom.2022.166959
Autor:
Patresio A.M. Nascimento, Marcos V. dos S. Rezende, Ronaldo Santos da Silva, R.S. Freire, Ariosvaldo J.S. Silva, Iure da S. Carvalho, Sabrina M. de Freitas, Carlos William de Araujo Paschoal
Publikováno v:
Ceramics International. 45:18994-19001
Structural and optical properties of non-stoichiometric pure and doped LiAl5O8 prepared via a simple sol-gel using glucose were investigated. X-ray diffraction, scanning electron microscopy, and photoluminescence measurements were used to characteriz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0f4bcf9bcc158ddc070d3085fd3dab6
https://doi.org/10.1016/j.ceramint.2019.06.140
https://doi.org/10.1016/j.ceramint.2019.06.140
Autor:
Patresio A.M. Nascimento, Ariosvaldo J.S. Silva, Danilo O. Junot, Marcos V. dos S. Rezende, D.V. Sampaio, Lílian M. Jesus, T.R. Cunha, Ronaldo Santos da Silva, Iure da S. Carvalho, Amanda I. dos S. Barbosa, Adriano B. Andrade
Publikováno v:
Materials Chemistry and Physics. 228:9-14
Eu-doped (Y2.99-xGdx)Al5O12 phosphors (with x = 0, 0.5, 1, 1.5, 2, 2.5, and 2.99) were prepared by a sol-gel method using polyvinylalcohol (PVA) as gel agent. The crystal structures were characterized through X-ray diffraction and the resulting data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79ca9582812400a5e20511a9c6a08fa9
https://doi.org/10.1016/j.matchemphys.2019.02.035
https://doi.org/10.1016/j.matchemphys.2019.02.035
Autor:
Maria A. Gomes, José J. Rodrigues, Jhon F.M. Avila, Zélia Soares Macedo, Mário E.G. Valerio, Márcio A. R. C. Alencar, Antônio Carlos Brandão-Silva, Lorena F.A. Domingos, Iure da S. Carvalho
Publikováno v:
Optical Materials. 89:536-542
The present paper describes the production via a new modified sol-gel route and the characterization of yttrium oxide nanoparticles doped with neodymium ions (Y2O3:Nd3+) aiming applications in temperature sensing of biological systems. The proposed s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d07a3ab98148d678c3350931d08b9db
https://doi.org/10.1016/j.optmat.2019.01.064
https://doi.org/10.1016/j.optmat.2019.01.064
Autor:
Wellisson S. Silveira, Iure da S. Carvalho, Y.R.R.S. Rezende, D.O. Junot, C.X. Resende, Marcos V. dos S. Rezende, Romualdo S. Silva, U. C. Pereira, N.S. Ferreira
Publikováno v:
Optik. 235:166636
We report on cost-effective recycling of crab shell biowaste and synthesis of luminescent powders. XRD, thermogravimetric and, FTIR analysis revealed that calcination temperature must be beyond ∼800 °C to recycle biowastes crab (Ucides cordatus) s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3904c2918262dee421ab79b420971a3
https://doi.org/10.1016/j.ijleo.2021.166636
https://doi.org/10.1016/j.ijleo.2021.166636
Autor:
Patresio A.M. Nascimento, Wellisson S. Silveira, Ariosvaldo J.S. Silva, Marcos V. dos S. Rezende, Iure da S. Carvalho
Publikováno v:
Optik. 231:166363
To improve the luminescence properties of Ce-doped Y3Al5O12 (YAG:Ce3+), Sr ions are used as co-dopants. New defects created in the charge compensation could modify the symmetry of the crystal field around the Ce doping ion. The samples were produced
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cd41b873c3b5791661ee863e0618868
https://doi.org/10.1016/j.ijleo.2021.166363
https://doi.org/10.1016/j.ijleo.2021.166363
Autor:
Patresio A.M. Nascimento, Marcos V. dos S. Rezende, Ariosvaldo J.S. Silva, Thiago De Araujo Nascimento, Iure da S. Carvalho, Wellisson S. Silveira
Publikováno v:
physica status solidi (b). 258:2000584
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c228a665dc9225ee07beccc5fb1734b8
https://doi.org/10.1002/pssb.202000584
https://doi.org/10.1002/pssb.202000584
Autor:
Benjamin J.A. Moulton, D.V. Sampaio, Ronaldo Santos da Silva, Ariovaldo J.S. Silva, Marcos V. dos S. Rezende, Patresio A.M. Nascimento, R.S. Freire, Iure da S. Carvalho, Carlos William de Araujo Paschoal
Publikováno v:
Journal of Alloys and Compounds. 836:155388
Li1+xSr0.99PO4:Eu0.01 (x = 0.1, 0.3 or 0.5) phosphors are prepared using glucose with a modified sol-gel method. X-ray diffraction (XRD), scanning electron microscopy and photoluminescence and X-ray absorption spectroscopy are used to characterize th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b01b09c693d78cfb0d000bf2b049fa0
https://doi.org/10.1016/j.jallcom.2020.155388
https://doi.org/10.1016/j.jallcom.2020.155388
Autor:
Patresio A.M. Nascimento, Ariosvaldo J.S. Silva, Marcos V. dos S. Rezende, Benjamim J.A. Moulton, Iure da S. Carvalho
Publikováno v:
Optical Materials. 98:109449
Gd3Al5O12:Eu3+ (GAG:Eu) phosphors have been prepared by sol-gel route using different chelating agents (Glucose, Lactose, and Maltodextrin). The effect of the chelating agents on the stabilization of GAG:Eu was investigated via XRD, Photoluminescence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a034b59bef6d6f396b60ccedb16a456
https://doi.org/10.1016/j.optmat.2019.109449
https://doi.org/10.1016/j.optmat.2019.109449
Autor:
Ariosvaldo J.S. Silva, Marcos V. dos S. Rezende, Iure da S. Carvalho, Patresio A.M. Nascimento
Publikováno v:
Optical Materials. 96:109369
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) and photoluminescence spectroscopy (PL), respectively. The results reveal that the presenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27d8dce79dd77348099079b4b3ad9d73
https://doi.org/10.1016/j.optmat.2019.109369
https://doi.org/10.1016/j.optmat.2019.109369