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Magnetorresistência e correntes de spin em Multicamadas de Ni81Fe19/ZnO/Pd
(Universidade Federal de Santa Maria, 2017-03-02)
In this work, we analyzed samples of thin films Ni81Fe19 and Pd with ZnO spacer. Ni81Fe19
is a ferromagnet with a low saturation magnetic field. Pd is a normal metal with high spinorbit
coupling, much used in spin Hall ...
Propriedades extrínsecas em filmes finos de VO2
(Universidade Federal de Santa Maria, 2010-08-31)
In earlier work done at the Laboratory of Magnetism and Magnetic Materials in
Santa Maria, spectroscopy measurements of electrical impedance between 100 kHz
and 1 GHz were a function of temperature in VO2 thin films along ...
Relaxação de spin: principais mecanismos em microfios e em filmes multicamadas
(Universidade Federal de Santa Maria, 2010-07-16)
This work is dedicated to investigate the spin relaxation in amorphous CoFeSiB glass-covered microwires and multilayered films of Permalloy/Cu. The microwires samples were Joule annealed and axially stressed in order to ...
Caracterização de multicamadas de NiFe/FeMn para medidas de magnetoimpedância assimétrica abaixo de 2 GHz
(Universidade Federal de Santa Maria, 2018-11-13)
In this work the giant magnetoimpedance effect (GMI) was investigated in exchange biased
Ni81Fe19/Fe50Mn50 bilayers. The study samples were deposited on glass substrate
by magnetron sputtering. The exchange bias (EB) was ...
Dinâmica de paredes de domínios sob o efeito de correntes elétricas
(Universidade Federal de Santa Maria, 2013-11-28)
In this work, we have measured the domain wall velocity in the low field regime and studied
the domain wall dynamics in Joule-annealed amorphous glass-covered microwires with positive
magnetostriction. Such microwires ...
Algoritmo genético acoplado a um método multi-grid e a teoria dos grafos para determinação da estrutura de equilíbrio de aglomerados atômicos
(Universidade Federal de Santa Maria, 2012-12-14)
In this work we present a proposal to improve Genetic Algorithm method by coupling
it to the techniques of discretization of the configurational space via the multi-grid
methodology, and by employing a topological selection ...
Congelamento inverso em um modelo de vidro de spin fermiônico
(Universidade Federal de Santa Maria, 2012-10-03)
The present work studies the counterintuitive phenomenon of inverse transitions (IT). The
IT are a class of phase transitions (reversible) in which the ordered phase appears at higher
temperatures than the disordered ...
Descrição Booleana para eventos celulares: construção de redes, topologia e análise dinâmica
(Universidade Federal de Santa Maria, 2012-01-13)
This work presents a methodology to describe the dynamics
and topology of biological regulatory networks through the application of graph
theory. We model these networks using Boolean rules and simulations performed
with ...
Estudo teórico da interação de flúor em nanoestruturas de BC2N
(Universidade Federal de Santa Maria, 2011-09-09)
In this work we perform a theoretical study about fluorine adsorption in BC2N
nanostructures. The fluorine interaction with the BC2N nanostructures was studied
using only atomic fluorine on two nanotubos with different ...
Sazonalidade da concentração de CO2 atmosférico em uma área agrícola no RS
(Universidade Federal de Santa Maria, 2012-01-31)
In this work an agricultural area in Cruz Alta/RS was used to evaluate the seasonality of CO2
concentration with respect to meteorological variables of temperature, global radiation and
rainfall. The study period was ...