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Now showing items 11-20 of 97
Comportamento termodinâmico de cadeias de dímeros
(Universidade Federal de São Carlos, 2016-10-31)
In this Thesis we propose to describe the thermodynamical properties of dimer chains
in a one-dimensional lattice rstly considering q-states of chain orientation in the lattice
and secondly by a three states model where ...
Structural properties of nanoscopic ring systems and their optical response
(Universidade Federal de São Carlos, 2016-03-30)
In this thesis, the electronic and structural properties of nanostructured systems were studied aiming to get a realistic model for quantum rings, potentially adaptable for quantum dots. To attain these goals, several ...
Um estudo sobre crescimento de nanofios de fosfeto de índio e algumas de suas propriedades
(Universidade Federal de São Carlos, 2016-04-13)
This work presents the development of an experimental apparatus and a route for the growth of InP nanowires whose general characteristics and properties made them suitable for the construction of electronic devices. Among ...
Nanofios de germânio : síntese, caracterização estrutural, propriedades elétricas e aplicações
(Universidade Federal de São Carlos, 2016-08-09)
The element germanium is part of the history of electronic equipment based on semiconductor
from its early days with the invention of the transistor, until today with current research
related to growth of germanium ...
Síntese e caracterização de compósitos magnetoelétricos particulados de ferritas de Co e Ni e ferroelétricos no CFM
(Universidade Federal de São Carlos, 2010-08-15)
Nowadays, the optimized magnetoelectric coupling in particulate composites is based on the optimization of the processing techniques, which support an integrity interface between the phases, and on the novel combinations ...
Multiferróicos monofásicos a base de Pb(Fe2/3W1/3)O3-PbTiO3: acoplamento magnetoelétrico intrínseco
(Universidade Federal de São Carlos, 2010-11-25)
Multiferroic ceramic solid solutions between the ferroelectric relaxor Pb(Fe2/3W1/3)O3 (PFW) and normal ferroelectric PbTiO3 (PT) [PFW-PT] has been synthesized by a modified B-site precursor method and characterized by ...
Correlacões quânticas: medidas e simetrias
(Universidade Federal de São Carlos, 2011-06-17)
In this thesis, we explore two sort of quantum correlations: entanglement and quantum discord. We present a geometric method to identify and measure the degree of entanglement based on symmetries of vectors and matrices ...
Relação entre os métodos de síntese de precursores particulados ferroicos e a obtenção de compósitos magnetoelétricos texturados
(Universidade Federal de São Carlos, 2015-09-04)
This study analyses the relationships between synthesis routes and physical properties of the composite system 67.5(PbMg1/3Nb2/3O3) +32.5(PbTiO3), or simply PMN-PT, as ferroelectric phase and BaFe12O19, or BaM, as magnetic ...
Propriedades estruturais e magnéticas do isolante topológico Bi2Se3 com aglomerados de FexSey
(Universidade Federal de São Carlos, 2016-03-29)
In this work, we discuss the growth of Fe containing Bi2 Se3epilayers on the
GaAs(111) substrate by molecular beam epitaxy (MBE) with Fe contents of in the 8-
20% range. It is shown that Bi2 Se3 film thin are grown with ...
Teletransporte quântico na presença de ruído
(Universidade Federal de São Carlos, 2016-04-01)
The main focus of this work is to explore the feasibility of conducting the
teleportation protocol in scenarios where the presence of an external environment
reduces the purity of the input state and the transmission ...