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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 ...
Magnetoimpedância em multicamadas de Ni81Fe19/Cu com a corrente de sonda perpendicular ao plano do filme
(Universidade Federal de Santa Maria, 2006-06-02)
In this work the behavior of the magnetoimpedance (MI) in ferromagnetic
multilayered (Ni81Fe19/Cu) produced by magnetron sputtering was studied. In all
measurements, the probe current was applied perpendicularly to the ...
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 ...
Exchange bias perpendicular em multicamadas de IrMn/Co/Pd
(Universidade Federal de Santa Maria, 2023-04-26)
Magnetic skyrmions are spin textures that can arise in thin films that exhibit the Dzyaloshinskii–Moriya interaction. Such interaction emerges from symmetry breaking at the interface
between a ferromagnetic material and ...