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Magnetoimpedância como ferramenta para a caracterização magnética de microfios amorfos
(Universidade Federal de Santa Maria, 2006-09-22)
The possibility of exploring the magnetic properties of amorphous microwires in technological applications has attracted the attention of the scientific community in the last years. Beyond, the magnetoimpedance effect has ...
Efeito do tratamento térmico na relaxação magnética de microfios amorfos de CoFeSiB recobertos por vidro
(Universidade Federal de Santa Maria, 2012-02-27)
Magnetoimpedance has been proved to be an excellent tool to study the magnetization
dynamics and the ferromagnetic resonance (FMR) linewidth provides a convenient way
for measuring damping parameters in magnetic materials. ...
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 ...
Detecção elétrica da ressonância ferromagnética em filmes finos de NiFe/FeMn
(Universidade Federal de Santa Maria, 2018-07-20)
Devices based on effects that generate a dc voltage in ferromagnetic ressonance (FMR)
condition are of great interest for broadband communication applications, since they allow
the rectification of radio frequency signals ...
Dinâmica da magnetização em filmes finos de Co20Fe60B20
(Universidade Federal de Santa Maria, 2021-02-28)
In this work, it was realize a ferromagnetic resonance insvestigation in Co20Fe60B20 thin films with diferent thickness between 100 - 2000 nm. The hysteresis curves were obtained with a vibrating sample magnetometer. The ...
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 ...