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Efeitos de interações de curto alcance e tamanho de clusters em sistemas desordenados
(Universidade Federal de Santa Maria, 2015-08-04)
The competition between cluster spin glass and ferromagnetism or antiferromagnetism
is studied in this work. The model considers clusters of spins with short-range
ferromagnetic or antiferromagnetic interactions (J0) and ...
Exchange bias em multicamadas de NiFe/IrMn/Ta: um estudo através da magnetorresistência anisotrópica
(Universidade Federal de Santa Maria, 2015-08-07)
In this work a study of the exchange interaction between ferromagnetic (NiFe) and antiferromagnetic
(IrMn) layers was done through structural, magnetic and electric characterization.
NiFe/IrMn/Ta films were grown with ...
Análise de populações estelares e subestruturas em aglomerados de galáxias
(Universidade Federal de Santa Maria, 2015-08-25)
In this work, we investigated differences between stellar populations of galaxies that are part
of a cluster with and without substructures. We used optical spectra obtained from Sloan Digital
Sky Servey III DR10 for the ...
Estudo computacional da viscosidade da água confinada em nanotubos de carbono
(Universidade Federal de Santa Maria, 2015-02-27)
When confined in nanometer scale, water presents great variation in their dynamic
properties. Here, we carried out molecular dynamics simulations to determine
the ratio of the diffusion coefficient and viscosity variation ...
Estudo de primeiros princípios de nanofios de inas submetidos a tensões extremas
(Universidade Federal de Santa Maria, 2015-03-30)
The ability to manipulate materials at the atomic scale turn it possible to look
for materials at the nanoscale that can supersede the performance of their bulk counterparts
in specific tasks. Nanowires, due to their ...
Cinemática e distribuição do gás ionizado na região central das galáxias Seyfert NGC4501 e NGC3982
(Universidade Federal de Santa Maria, 2015-02-25)
We present two-dimensional (2D) maps for emission-line fluxes and ratios and kinematics for
the central regions of the Seyfert galaxies NGC 4501 and NGC 3982, from optical spectra obtained
with the GMOS (Gemini Multi ...