title: High performance magnetoimpedance in FeNi/Ti nanostructured multilayers with opened magnetic flux.
abstract: Magnetic [FeNi (170 nm)/Ti (6 nm)]3/Cu (L(cu) = 250 or 500 nm)/[Ti (6 nm)/FeNi (170 nm)]3 multilayers were designed with focus on high frequency applications. They were deposited onto glass or a microfluidic system compatible flexible Ciclo Olefin Copolymer substrate and comparatively tested. A maximum sensitivity for the total impedance of 110%/Oe was obtained for a driving current frequency of 30 MHz for [FeNi/Ti]3/Cu (L(cu) = 500 nm)/[Ti/FeNi]3 multilayers deposited onto a glass substrate and 45%/Oe for a driving current frequency of 65 MHz for the same multilayers deposited onto the flexible polymer substrate, a very promising result for applications. The possibility of using flexible substrate/[FeNi/Ti],/Cu/[Ti/FeNi]3 multilayers as MI pressure-sensitive elements was also demonstrated.
authors.affiliation: Departamento de Electricidad y Electrónica, Universidad del País Vasco UPV-EHU, 48940 Leioa, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Fernández
authors.forename: A V
authors.initials: AV
authors.lastname: Svalov
authors.forename: A
authors.initials: A
authors.lastname: García-Arribas
authors.forename: J
authors.initials: J
authors.lastname: Feuchtwanger
authors.forename: J M
authors.initials: JM
authors.lastname: Barandiaran
authors.forename: G V
authors.initials: GV
authors.lastname: Kurlyandskaya