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Avaliação do "magnetron sputtering" como técnica para obtenção de MgB2
(Universidade Federal de Santa Maria, 2014-08-26)
In this work a survey of the potentialities and limitations of magnetron sputtering as a
tool for the production of MgB2 superconductors thin films has been made. Instead of the usual
approaches, like co-deposition onto ...
Estudo da transição cristalográfica em filme fino de VO2 por difração de raios-x
(Universidade Federal de Santa Maria, 2011-03-28)
In one sample, X-Ray diffractions have been measured as a function of the temperature, in
order to follow the crystallographic transition experienced by VO2 near 68ºC. The results have
been analysed with the aide of a ...
Anisotropias magnéticas em filmes finos de Co: uma análise por magnetometria de torque
(Universidade Federal de Santa Maria, 2010-12-03)
By studying the magnetic behavior of materials a very important parameter to be analyzed are the constants of anisotropy. They can be associated with an effective anisotropy energy or to a more specific one as, for example, ...
Formação de texturas cristalográficas em filmes finos de NbN
(Universidade Federal de Santa Maria, 2017-12-20)
Niobium nitride (NbN) thin films can be hard and resistant not only to mechanical wear but
also to chemically aggressive atmospheres. Additionally, they can present a superconducting
transition in temperatures that are ...
Medida da magnetização de filmes finos: desenvolvimento de um magnetômetro kerr
(Universidade Federal de Santa Maria, 2014-02-21)
The Kerr effect is the rotation of the plane of polarization of a light beam during
reflection on a magnetized sample. In this work we built an optical Kerr effect
magnetometer Longitudinal (L-MOKE) and measured the ...
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 ...
Indução de um eixo fácil de magnetização utilizando máscaras de sombreamento em filmes finos de CoFeB
(Universidade Federal de Santa Maria, 2012-01-30)
CoFeB thin films were produced using the technique of magnetronsputtering. Six
samples were produced magnetic thin films with two different thicknesses, using
different settings for shading masks. For each film were made ...