Special Issue "Advances in Magnetic Materials and Magneto-Elastic Sensors"

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Electronic Materials".

Deadline for manuscript submissions: 30 June 2020.

Special Issue Editors

Prof. Dr. Jon Gutiérrez Etxebarria
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Guest Editor
Applied Physics, Electricity and Electronics Department, Faculty of Science and Technology, University of the Basque Country UPV/EHU, Spain
Interests: amorphous metallic glasses fabrication; magnetic materials characterization; magnetostrictive and magnetoelastic materials; magnetoelastic sensors
Dr. Andoni Lasheras Aransay
Website1 Website2
Guest Editor
Applied Physics, Applied Physics I Department,Faculty of Engineering, University of the Basque Country UPV/EHU, Spain
Interests: ferromagnetic materials fabrication; ferromagnetic materials characterization; magnetostrictive and magnetoelastic materials; magnetoelectric sensors

Special Issue Information

Dear Colleagues,

Magnetic materials have been, are and will always be a hot topic for the condensed matter and applied physics research community. There is continuous research not only into the composition, structures or nanostructures of new magnetic materials, but also into their wide spectrum of application as sensors and actuators. The ability these materials show to change their magnetic state under the application of many external stimuli make them very attractive for scientists and engineers. Clear and well-known examples include the change in the magnetoelastic resonance frequency under loading with extremely low masses of targeted molecules or the change in the measured electrical impedance of a magnetic material under the action of an external magnetic field that can be generated from the presence of nanoparticles. Both cases demonstrate an extremely high sensitivity to external perturbances just by choosing an appropriate magnetic material as the sensor element.

Thus, this Special Issue is aimed at providing researchers with a survey of the recent progress in magnetic materials and their applications, with a special emphasis on magnetoelasticity phenomenon-based sensors. The articles presented within will cover a wide range of related topics, from magnetic materials preparation (ribbons, thin layers, multilayers, nanoparticles and nanostructures) and characterization, to their various practical applications in sensors for physical parameters (such as humidity, pressure, electrical current, etc.), chemical substances (as inorganic salts or analytes), biological molecules (as proteins, bacteria or other types of pathogens), gases (VOCs and hazardous gases), and so on. For these sensing purposes, magnetic materials can be used in their as-prepared state or after a specific functionalization of the magnetic material. All these aspects will be covered in this Special Issue.

This broad perspective deals not only with classic but also the most modern applications, such as in biomedicine, a research field in which magnetic nanomaterials for hyperthermia and cancer treatment purposes or magnetoelectric core/shell type nanoparticles for drug delivery and release are nowadays a hot topic. This Special Issue will provide an overview of what is currently being explored in magnetic materials for sensing purposes.

Prof. Dr. Jon Gutiérrez Etxebarria
Dr. Andoni Lasheras Aransay
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Magnetostrictive and magnetoelastic materials for sensing applications
  • Thin film and multilayered magnetic materials for sensing applications
  • Magnetic nanoparticles and nanostructures for sensing applications
  • Advances in magnetic materials for sensing applications

Published Papers (2 papers)

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Research

Open AccessArticle
Nanocrystallization in FINEMET-Type Fe73.5Nb3Cu1Si13.5B9 and Fe72.5Nb1.5Mo2Cu1.1Si14.2B8.7 Thin Films
Materials 2020, 13(2), 348; https://doi.org/10.3390/ma13020348 - 12 Jan 2020
Cited by 1
Abstract
A growing variety of microelectronic devices and magnetic field sensors as well as a trend of miniaturization demands the development of low-dimensional magnetic materials and nanostructures. Among them, soft magnetic thin films of Finemet alloys are appropriate materials for sensor and actuator devices. [...] Read more.
A growing variety of microelectronic devices and magnetic field sensors as well as a trend of miniaturization demands the development of low-dimensional magnetic materials and nanostructures. Among them, soft magnetic thin films of Finemet alloys are appropriate materials for sensor and actuator devices. Therefore, one of the important directions of the research is the optimization of thin film magnetic properties. In this study, the structural transformations of the Fe73.5Nb3Cu1Si13.5B9 and Fe72.5Nb1.5Mo2Cu1.1Si14.2B8.7 films of 100, 150 and 200 nm thicknesses were comparatively analyzed together with their magnetic properties and magnetic anisotropy. The thin films were prepared using the ion-plasma sputtering technique. The crystallization process was studied by certified X-ray diffraction (XRD) methods. The kinetics of crystallization was observed due to the temperature X-ray diffraction (TDX) analysis. Magnetic properties of the films were studied by the magneto-optical Kerr microscopy. Based on the TDX data the delay of the onset crystallization of the films with its thickness decreasing was shown. Furthermore, the onset crystallization of the 150 and 200 nm films began at the temperature of about 400–420 °C showing rapid grain growth up to the size of 16–20 nm. The best magnetic properties of the films were formed after crystallization after the heat treatment at 350–400 °C when the stress relaxation took place. Full article
(This article belongs to the Special Issue Advances in Magnetic Materials and Magneto-Elastic Sensors)
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Open AccessFeature PaperArticle
Polyacrylamide Ferrogels with Ni Nanowires
Materials 2019, 12(16), 2582; https://doi.org/10.3390/ma12162582 - 13 Aug 2019
Cited by 1
Abstract
Nickel magnetic nanowires (NWs) have attracted significant attention due to their unique properties, which are useful for basic studies and technological applications, for example in biomedicine. Their structure and magnetic properties were systematically studied in the recent years. In this work, Ni NWs [...] Read more.
Nickel magnetic nanowires (NWs) have attracted significant attention due to their unique properties, which are useful for basic studies and technological applications, for example in biomedicine. Their structure and magnetic properties were systematically studied in the recent years. In this work, Ni NWs with high aspect ratios (length/diameter ~250) were fabricated by electrodeposition into commercial anodic aluminum oxide templates. The templates were then etched and the NWs were suspended in water, where their hydrodynamic size was evaluated by dynamic light scattering. The magnetic response of these NWs as a function of an external magnetic field indicates a dominant shape anisotropy with propagation of the vortex domain wall as the main magnetization reversal process. The suspension of Ni NWs was used in the synthesis of two types of polyacrylamide ferrogels (FGs) by free radical polymerization, with weight fractions of Ni NWs in FGs of 0.036% and 0.169%. The FGs were reasonably homogeneous. The magnetic response of these FGs (hysteresis loops) indicated that the NWs are randomly oriented inside the FG, and their magnetic response remains stable after embedding. Full article
(This article belongs to the Special Issue Advances in Magnetic Materials and Magneto-Elastic Sensors)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Giant Stress Impedance magnetoelastic sensors employing soft magnetic amorphous ribbons    

J.J. Beato-Lópeza,b, J. G. Urdániz-Villanuevaa, J.I. Pérez-Landazábala,b, C. Gómez- Poloa,b,

a Departamento de Ciencias, Universidad Pública de Navarra, 31006 Pamplona, Spain.

b Institute for Advanced Materials (INAMAT), Universidad Pública de Navarra, 31006 Pamplona, Spain.

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