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dc.creatorBeato López, Juan Jesúses_ES
dc.creatorRoyo, Isaaces_ES
dc.creatorGómez Polo, Cristinaes_ES
dc.description.abstractIn this work a sensitive micrometric non-contact position sensor based on the Giant MagnetoImpedance effect (GMI) is analyzed. A nearly zero magnetostrictive CoFeSiBCr wire was employed as sensor nucleus. The sensing principle is based on the changes in the high frequency electric impedance, Z, of the soft magnetic element as a function of the relative position of a permanent magnet generating a non-uniform magnetic field along the wires axis. The sensor sensitivity is analyzed in terms of the magnetic field gradient and wire's length. The comparison between the sensing response of a single wire element and a long wire (12 cm in length) with different voltage contacts along its axis is performed. Higher micrometric sensitivities are achieved in wires with a certain critical length. A slight enhancement of the sensor sensitivity is found under the single wire configuration below the critical wire length. These results are interpreted as the contribution of the characteristic closure domain structure at the sample ends in these soft magnetic wires. Finally, the application of the sensor for the detection of the daily micrometric trunk shrinkage variations in a lemon tree is presented. The results indicate that this type of magnetic sensors can be easily implemented in the agricultural sector, providing a low cost and sensitive detection technique regarding water monitoring purposes.en
dc.description.sponsorshipThe work has been performed within the framework of the project VITICS, IIM14244.RI1 financially supported by the Departamento de Economía, Haciencia, Industria y Empleo, Navarra Government (Spain) and cofinanced with FEDER EU funds.en
dc.format.extent21 p.
dc.relation.ispartofJournal of Magnetism and Magnetic Materials, 465 (2018) 489-494en
dc.rights© 2018 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0.en
dc.subjectGiant magnetoimpedanceen
dc.subjectMagnetic sensorsen
dc.subjectSoft magnetic amorphous wiresen
dc.titleMicrometric non-contact position magnetoimpedance sensoren
dc.typeArtículo / Artikuluaes
dc.contributor.departmentUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. InaMat - Institute for Advanced Materialses_ES
dc.contributor.departmentUniversidad Pública de Navarra. Departamento de Cienciases_ES
dc.contributor.departmentNafarroako Unibertsitate Publikoa. Zientziak Sailaeu
dc.rights.accessRightsAcceso embargado / Sarbidea bahitua dagoes
dc.type.versionVersión aceptada / Onetsi den bertsioaes
dc.contributor.funderGobierno de Navarra / Nafarroako Gobernua, VITICS, IIM14244.RI1es

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© 2018 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0.
Except where otherwise noted, this item's license is described as © 2018 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0.