Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Ducinei Garcia"'
Publikováno v:
Boletín de la Sociedad Española de Cerámica y Vidrio, Vol 62, Iss 1, Pp 2-10 (2023)
The transparent relaxor ferroelectric ceramics of the system lanthanum modified lead magnesium niobate (PLMN-13PT) have been investigated for a variety of electro-optic, properties; good electro-optic switching times and modest half-wave voltages. In
Externí odkaz:
https://doaj.org/article/2f528f6fb83b496fa5faac8f35ea172f
Autor:
Flávia Regina Estrada, Ducinei Garcia
Publikováno v:
Open Ceramics, Vol 8, Iss , Pp 100180- (2021)
This paper presents a guideline to aid the space group determination of distorted perovskites by a combination of properties, selected area (SAED) and convergent beam electron diffraction (CBED). The case study reported here is based on the (Pb,Ca)Ti
Externí odkaz:
https://doaj.org/article/8e2cbb0050a04afb8acf9abb405dca7f
Autor:
Fabio Luis Zabotto, Alexandre José Gualdi, Jose Antonio Eiras, Adilson Jesus Aparecido de Oliveira, Ducinei Garcia
Publikováno v:
Materials Research, Vol 15, Iss 3, Pp 428-433 (2012)
This study evaluates the structural, microstructural, electric and magnetic properties of nickel ferrite samples prepared through the solid state reaction. It was observed that an increase in the sintering temperature produces a higher cation concent
Externí odkaz:
https://doaj.org/article/4b3eb07b2fec42ef99a66c675ca37859
Publikováno v:
Processing and Application of Ceramics, Vol 6, Iss 1, Pp 65-75 (2012)
The multiferroic (1-x)PbFe2/3W1/3O3–xPbTiO3 solid solutions with various compositions x = 0, 0.10, 0.20 and 0.30 were investigated. The features of the relaxor-to-ferroelectric transition with increasing x were discussed based in connection with di
Externí odkaz:
https://doaj.org/article/eccf6c01149343688e674fb02916af9c
Publikováno v:
Materials Research, Vol 14, Iss 4, Pp 434-441 (2011)
Multiferroic Pb(Fe2/3W1/3)O3-PbTiO3 (PFW-PT) ceramics were synthesized via a modified two-stage solid-state reaction. This method utilized Fe2WO6, prepared at a first-stage, which was subsequently reacted with a stoichiometric amount of PbO and TiO2
Externí odkaz:
https://doaj.org/article/aabda2b0b8b546c9bf1070ef193218ed
Autor:
Manuel Henrique Lente, Alberto Luís Zanin, Jovan Vasiljevic, Ivair Aparecido dos Santos, Jose Antonio Eiras, Ducinei Garcia
Publikováno v:
Materials Research, Vol 7, Iss 2, Pp 369-372 (2004)
In this work, the thermal stability of piezoelectric constants of PMN-PT ceramics in the tetragonal and rhombohedral phases were investigated in a wide range of temperatures. The results showed that the tetragonal PMN-PT presented higher thermal stab
Externí odkaz:
https://doaj.org/article/75e3fe9d101944d78f2878a4b26106cf
Publikováno v:
Materials Research, Vol 6, Iss 4, Pp 507-514 (2003)
Externí odkaz:
https://doaj.org/article/274fe013b9d84755b4e7c7f1a33e55ee
Publikováno v:
Ingeniería y Ciencia, Vol 10, Iss 20 (2014)
Monocristales de ( (1 - x)Pb(Zn1=3Nb2=3)O3-xPbTiO3-PZN-xPT ) con estructura perovskita, muestran excelentes propiedades dieléctricas, ópticas y electrostrictivas en composiciones cerca al contorno de fase morfotrópico (CFM), x 0;09. La preparació
Externí odkaz:
https://doaj.org/article/c0b2d942d39b4914a1bf48963335b326
Autor:
Ducinei Garcia
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.
Síntese e caracterização estrutural, física, ferroelétrica e ótica de cerâmicas ferroelétricas transparentes (CFT\'s) foram realizadas para o sistema (Pb,La)(Zr,Ti)O3. Pós de titanato zirconato de chumbo modificado com lantanio (PLZT) foram
Publikováno v:
Boletín de la Sociedad Española de Cerámica y Vidrio. 62:2-10
The transparent relaxor ferroelectric ceramics of the system lanthanum modified lead magnesium niobate (PLMN-13PT) have been investigated for a variety of electro-optic, properties; good electro-optic switching times and modest half-wave voltages. In