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Estudo da anisotropia unidirecional e da histerese rotacional em sistemas com exchange bias
(Universidade Federal de Santa Maria, 2014-08-18)
The exchange bias (EB) phenomen occurs due to the coupling between ferromagnetic and
antiferromagnetic material and the main characteristics are the rise of unidirectional anisotropy
and the rotational hysteresis in torque ...
Exchange bias em bicamadas de NiFe/FeMn: um estudo em função da espessura da camada antiferromagnética
(Universidade Federal de Santa Maria, 2018-12-04)
The exchange bias (EB) arises, generally, from the interfacial coupling between a ferromagnetic
layer (FM) and an antiferromagnetic layer (AFM). The most well-known manifestations
of this phenomenon, in samples with a ...
Estudo do desalinhamento entre os eixos de anisotropia via magnetorresistência anisotrópica em sistemas com exchange bias
(Universidade Federal de Santa Maria, 2019-11-28)
The Exchange Bias effect (EB) arises in systems with interfacial coupling, generally between
a ferromagnetic (FM) and a antiferromagnetic (AFM) material. The well-known manifestations
of this phenomenon are the field ...
Efeito hall extraordinário em multicamadas granulares de SiO2/Co/CoO com exchange bias
(Universidade Federal de Santa Maria, 2012-07-27)
Granular magnetic systems can be composed by magnetic particles or clusters with size of some
nanometers. These magnetic nanoparticles present different magnetic order phases, as superparamagnetic,
and they can be embedded ...
Efeito hall de spin inverso em multicamadas de Ta/NiFe/FeMn/Ta
(Universidade Federal de Santa Maria, 2017-10-27)
In the present thesis, the generation of a dc voltage in exchange-biased Ta/NiFe/FeMn/Ta
multilayers at ferromagnetic resonance was investigated. This dc signal is related to two distinct
phenomena, namely, the spin ...
Processos de magnetização e magnetoimpedância em filmes com exchange bias
(Universidade Federal de Santa Maria, 2006-10-20)
In this work, the magnetization process and the magnetoimpedance effect in thin films with exchange bias were studied. We have investigated NiO/NiFe and NiFe/FeMn/Ta multilayer produced by magnetron sputtering on glass and ...