Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Douglas Langie da Silva"'
Autor:
Louise Patron Etcheverry, Wladimir Hernandez Flores, Douglas Langie da Silva, Eduardo Ceretta Moreira
Publikováno v:
Materials Research, Vol 21, Iss 2 (2018)
ZnO nanostructures were synthesized by a proteic sol-gel method, using zinc nitrate hexahydrate and gelatin as precursors. Size and shape evolution of ZnO nanostructures were achieved by annealing temperature in the range 250-1000 ºC. The crystallin
Externí odkaz:
https://doaj.org/article/ce33689b28874cfaa63f54a8be492480
Autor:
Iuri S. Brandt, Enio Lima, Roberto D. Zysler, Douglas Langie da Silva, Milton A. Tumelero, Ricardo Faccio, André A. Pasa
Publikováno v:
Journal of Magnetism and Magnetic Materials. 441:374-386
In this work an extensive characterization of Co doped Cu2O thin films grown by electrochemical deposition is presented. The doped films showed ferromagnetic behavior, with impressive Curie temperature up to 700 K. Undoped samples also presented magn
Autor:
André Gündel, Douglas Langie da Silva, Agnieszka Pawlicka, Camila M. Cholant, R. M. J. Lemos, César O. Avellaneda, Elton A. Moura, T. M. Westphal, C. F. Azevedo, Wladimir H. Flores
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Aiming to improve electrochromic properties of vanadium pentoxide (V2O5) new niobium-doped vanadium pentoxide (V2O5:Nb2O5) thin films were obtained by combining sol–gel method with dip-coating technique. The sols were synthesized by reacting vanadi
Gaussian and critical scalings in the magnetoconductivity fluctuations of Y3Ba5Cu8O18 superconductor
Autor:
F Mesquita, Frederik Wolff-Fabris, C. P. Oliveira, V. N. Vieira, Fábio Teixeira Dias, J. R. Lima, Erik Kampert, Douglas Langie da Silva, Paulo Pureur
We have studied the superconducting transition and the magnetoconductivity fluctuations in the polycrystalline Y3Ba5Cu8O[Formula: see text] (Y358) superconductor under magnetic fields upto 1 T. A two-step superconducting transition could be observed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::387d0f72cc9c1b1ff29431adeb7c9ae4
http://wrap.warwick.ac.uk/114298/7/WRAP-Gaussian-critical-scalings-magnetoconductivity-fluctuations-Kampert-2018.pdf
http://wrap.warwick.ac.uk/114298/7/WRAP-Gaussian-critical-scalings-magnetoconductivity-fluctuations-Kampert-2018.pdf
Autor:
Eduardo Ceretta Moreira, Douglas Langie da Silva, Wladimir H. Flores, Louise Patron Etcheverry
Publikováno v:
Materials Research v.21 n.2 2018
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Volume: 21, Issue: 2, Article number: e20170936, Published: 05 MAR 2018
Materials Research, Vol 21, Iss 2 (2018)
Materials Research, Issue: ahead, Published: 05 MAR 2018
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Volume: 21, Issue: 2, Article number: e20170936, Published: 05 MAR 2018
Materials Research, Vol 21, Iss 2 (2018)
Materials Research, Issue: ahead, Published: 05 MAR 2018
ZnO nanostructures were synthesized by a proteic sol-gel method, using zinc nitrate hexahydrate and gelatin as precursors. Size and shape evolution of ZnO nanostructures were achieved by annealing temperature in the range 250-1000 ºC. The crystallin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3350f5077b317a30c7d9c90ac16ffd67
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000214103
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000214103
Autor:
V. N. Vieira, Iuri S. Brandt, Eduardo Ceretta Moreira, Alexandre da Cas Viegas, Fábio Teixeira Dias, Douglas Langie da Silva, André A. Pasa
Publikováno v:
Journal of Solid State Chemistry. 221:116-125
Nanostructured cobalt vanadium oxide (V 2 O 5 ) xerogels spread onto crystalline Si substrates were synthesized via peroxovanadate sol gel route. The resulting products were characterized by distinct experimental techniques. The surface morphology an
Autor:
Douglas Langie da Silva, André A. Pasa
Publikováno v:
Materials Chemistry and Physics. 140:7-10
The inner structure of V 2 O 5 nanofibers synthesized by electrochemical deposition has been investigated by transmission electron microscopy (TEM) and selected area electron diffraction (SAED). The experimental results demonstrate that the fibers ar
Publikováno v:
Materials Letters. 68:303-306
Na0.33V2O5 nanorods with high aspect to ratio have been obtained from Na+ intercalated V2O5 nanofibers in a one step annealing process. The solid state transformed nanorods present lengths of microns and widths around 400 nm. X-ray diffraction measur
Autor:
Vagner Stenger, J.J.S. Acuña, Douglas Langie da Silva, André A. Pasa, Vinicius C. Zoldan, Iuri S. Brandt, Alexandre da Cas Viegas
Publikováno v:
Topics in Catalysis. 54:97-100
Cu2O thin films were electrodeposited on n-Si (100) and p-Si (111) substrates, and characterized by X-ray diffraction, atomic force microscopy, transmission electron microscopy and optical reflectance measurements. The results showed Cu2O deposits wi
Autor:
Erik Kampert, Teresa Puig, Douglas Langie da Silva, Frederik Wolff-Fabris, Fábio Teixeira Dias, Xavier Obradors, V. N. Vieira, J. Albino Aguiar, D.R.B. Valadão
Publikováno v:
Physica C: Superconductivity and its Applications. 503:175-177
We report on magnetization studies in YBa 2 Cu 3 O 7− δ thin films with dispersed Ba 2 YTaO 6 nanoparticles. The magnetization measurements were made using a superconducting quantum interference device (SQUID) and a vibrating sample magnetometer (