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Theoretical and experimental investigation on the visible-light controlled functional properties in charged domain wall ferroelectrics
(Universidade Federal de São Carlos, 2023-04-13)
Optical control of ferroelectric properties have been attracted a growing interest as an
alternative to the conventional control by applied electric fields. However, the major
drawback for achieving an effective reversible ...
Electromigration of multiterminal transport bridges
(Universidade Federal de São Carlos, 2023-03-09)
With the continued miniaturization of integrated circuits (ICs), the case of metallic tracks subjected to stress caused by transport currents has become a matter of increasing concern, as it puts at risk the reliability ...
Influência dos defeitos nas funcionalidades elétricas de ZnO, AgO e polianilina
(Universidade Federal de São Carlos, 2023-03-03)
The optical and electrical properties in a semiconductor can be modeled by structural defects. In this thesis, we study the influence of defects on the optical and electronic properties of organic and inorganic semiconductors ...
Influência de Interface sobre as propriedades Ferroicas e Multiferroicas de Nanoestruturas de Pb(Zr0,2Ti0,8)O3/CoFe2O4 Crescidas via RF-Sputtering
(Universidade Federal de São Carlos, 2023-08-11)
This work shows a systematic study of the structural, microstructural, ferroic and multiferroic coupling properties of bilayer thin films of the PZT/CFO system, with the constituent phases varying in thickness from 20 to ...
Desenvolvimento e estudo de memristores baseados em redes de nanofios de SnO2
(Universidade Federal de São Carlos, 2024-01-17)
In this work, memristors were produced based on tin dioxide nanowire networks (𝑆𝑛𝑂2). These nanowires were synthesized by the VLS (Vapor-Liquid-Solid) method. The nanowire structural analysis via X-ray diffraction (XRD) ...
Estudo ab initio de materiais bidimensionais emergentes
(Universidade Federal de São Carlos, 2023-09-28)
Two-dimensional (2D) materials have attracted much attention in the last decade due to their unusual properties such as high degree of anisotropy and chemical flexibility. Since the isolation of a graphene layer, a wide ...
Ultracold bosons in random lattice potentials
(Universidade Federal de São Carlos, 2023-04-06)
The Bose-Hubbard model describes short-range interacting spinless bosons on a random lattice. This model is realized in ultracold atomic systems where quantum phase transitions can be observed. When loaded into a deep ...
Correlation between structure and optical properties of lead metasilicate glass-ceramic under high hydrostatic pressures
(Universidade Federal de São Carlos, 2022-09-21)
Glass structures are determined by not only composition, pressure, and temperature but also by the pressure and thermal histories in which the glass was submitted. In this thesis, a systematic study of these variables was ...
Influência da morfologia no comportamento magnético em aglomerado de CoTPP
(Universidade Federal de São Carlos, 2022-03-23)
The study of magnetic properties in organic molecules with transition metals has been intense in recent decades, mainly due to the ease of changing their magnetic behavior, either through the introduction of different types ...
Propriedades ópticas e magneto-ópticas de monocamadas de dicalcogenetos de metais de transição
(Universidade Federal de São Carlos, 2022-06-07)
Bidimensional (2D) materials are systems of great interest both from the fundamental physical point of view and for possible applications in electronics, optoelectronics and spintronics. In this thesis, the optical properties ...