Silva, Ricardo Barreto daSilva, Edimilson Felix daMori, Thiago José de AlmeidaDella Pace, Rafael DominguesPinto, Roberta Dutra de OliveiraCorrêa, Marcio AssolinBohn, FelipeSommer, Rubem Luis Sommer2021-11-252021-11-252015-06-23SILVA, Ricardo Barreto da; SILVA,Edimilson Felix da; MORI, Thiago José de Almeida; DELLA PACE, Rafael Domingues; DUTRA, Roberta Dutra de Oliveira; CORRÊA, Marcio Assolin; BOHN, Felipe; SOMMER, Rubem Luis Sommer. Improving the sensitivity of asymmetric magnetoimpedance in exchange biased NiFe/IrMn multilayers. Journal Of Magnetism And Magnetic Materials, [S.l.], v. 394, p. 87-91, nov. 2015. Elsevier BV. Disponível em: https://www.sciencedirect.com/science/article/pii/S0304885315302547?via%3Dihub. Acesso em: 24 mai. 2020. DOI: http://dx.doi.org/10.1016/j.jmmm.2015.06.038.0304-8853https://repositorio.ufrn.br/handle/123456789/45028We investigate the asymmetric magnetoimpedance effect in exchange biased NiFe/IrMn multilayers and explore the possibility of tailoring the linear region of the curves around zero magnetic field by playing with the thickness of the ferromagnetic layers, probe current frequency, and the orientation between external magnetic field and exchange bias field direction. We quantify the sensitivity by calculating the dZ/dH|H=0 in a wide range of frequencies. The highest sensitivity is observed for the thicker multilayer, reaching 160 m/Oe ∼ Ω at ∼2.0 GHz. The results place exchange biased magnetoimpedance multilayers as attractive candidates for the development of auto-biased linear magnetic field sensorsMagnetoimpedância assimétrica de NiFe/IrMnMagnetoimpedância com polarizaçãoAsymmetric NiFe/IrMn magnetoimpedanceMagnetoimpedance with polarizationarticle