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Magnetismo de nanofios de cobalto e níquel fabricados por eletrodeposição em alumina anódica porosa
(Universidade Federal de São Carlos, 2015-03-04)
In this thesis were investigated the magnetic properties of magnetic nanowire arrays of Co and Ni electrodeposited in porous anodic alumina templates. The electrochemical method was employed in the manufacturing steps of ...
Processamento e propriedades do sistema ferroelétrico (Li,K,Na)(Nb,Ta)O3 dopado com CuO
(Universidade Federal de São Carlos, 2015-03-09)
The search for new lead-free piezoelectric materials has been a major goal of many scientists in recent years. The main cause is the replacement of widely used lead zirconate titanate (PZT) based ceramics due to the highly ...
Efeito da modulação da topologia do confinamento em sistemas quase zero-dimensionais induzida por campo elétrico
(Universidade Federal de São Carlos, 2015-04-01)
Quantum dots grown by epitaxial techniques for optical and transport studies are usually capped by a layer of the same material on which the QDs were grown. Recently, several studies have shown how the growth parameters ...
Propriedades espectroscópicas da ação antimicrobiana do peptídeo polycerradin
(Universidade Federal de São Carlos, 2015-02-03)
The spectroscopy is a technique based on light-matter interaction, which provides information about the composition and structure of molecules. For this reason, it is used in various fields of science, including the biology. ...
Quantum memory based on electromagnetically induced transparency in optical cavities
(Universidade Federal de São Carlos, 2015-04-16)
Caracterização das propriedades ópticas e de spin de poços quânticos de InGaAsN/GaAs
(Universidade Federal de São Carlos, 2015-03-30)
In this work, it was investigated the optical and magneto-optical properties of In- GaAsN/GaAs and InGaAs/GaAs double quantum wells. It was performed a systematic experimental study of photoluminescence (PL) as a function ...
Geração de corrente spin polarizada em heteroestruturas dopadas com impurezas magnéticas
(Universidade Federal de São Carlos, 2015-08-07)
In this dissertation, the computational modeling of two semiconductor structures composed of two quantum wells was performed, being a quantum well doped with magnetic impurities. Each structure was designed to form a ...
Efeitos da hibridização e do campo magnético externo na supercondutividade de modelos multibandas
(Universidade Federal de São Carlos, 2015-02-11)
Superconductivity one of the most intriguing physical phenomena has been extensively studied due to their potential for technological applications. Despite advances in research in physics there is still no complete theory ...
Estudo de algoritmos para a determinação da temperatura de fusão
(Universidade Federal de São Carlos, 2015-08-31)
In this work, we studied the main methods used in molecular dynamics simulations to obtain the melting temperature of crystalline materials. The methods evaluated were the solid-liquid coexistence, mechanical melt of bulk, ...
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 ...