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Multiferroic and Magnetoelectric Materials: Fundamentals and Applications

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

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 13231

Special Issue Editors


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Guest Editor
BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
Interests: multifunctional materials; smart materials; energy storage; energy harvesting; sensors; actuators
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Centro de Física, Universidade do Minho, 4710-057 Braga, Portugal
Interests: magnetoelectric materials; additive manufacturing; smart materials; magnetic materials; nanotechnology

Special Issue Information

Dear Colleagues,

We live in an era of rapid and strong impact advances in science and technology, where scientific and innovation areas are increasingly overlapping in new and exciting ways, for the benefit of society. Recent technological advances point towards the development of sustainable, wireless, and interconnected autonomous smarter devices, systems, and cities, which are strongly based on the development of smart and multifunctional materials.

In this way, developing new smart and multifunctional materials and exploring their applicability has been the focus of an increasing number of areas, such as in the fields of materials, sensors, actuators, and biomedical applications, among others. Smart and multifunctional materials are benefitting from of this understanding and control of their physico-chemical properties, leading to a suitable tailoring of processability and device integration, shape/morphology, and performance.

In recent decades, multiferroic and magnetoelectric concepts have changed accepted thinking in this regard, resulting in a new generation of high-performance materials that have led to an increased focus on controlling production, structures, and functional responses, as well as on implementation in proof-of-concept applications. Multiferroics and magnetoelectrics have become hot topics in the increasingly scientific and technologically relevant world of smart and multifunctional materials due to the possibility of controlling the electric response with the magnetic field and vice-versa. Sensors, actuators, biomedical scaffolds, four-state memories, and energy harvesters are just some examples of applications that have been reported in recent times.

Despite the progress experienced by the research community in these areas being intense and fruitful, the main issues that should be addressed in order to enable real applications still need to be discussed and are related to improved performance, a deeper understainding of the physico-chemical characteristics of the mateirials, processability, device integration, and reliability. It seems noticeable that open questions and challenges are unceasingly emerging, which also act as a never-ceasing fountain of future research ideas and applications.

It is our pleasure to invite you to submit a manuscript for this Special Issue that seeks to become a landmark in the development of this interesting and fruitfull reseach field. Review papers, full papers, and short communications are all welcome.

Prof. Senentxu Lanceros-Mendez
Dr. Pedro Martins
Guest Editors

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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 2600 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

  • multiferroic
  • magnetoelectric
  • smart materials
  • multifunctional materials
  • composites

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Published Papers (3 papers)

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Research

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8 pages, 1992 KiB  
Article
Magnetic Proximity Sensor Based on Magnetoelectric Composites and Printed Coils
by Nélson Pereira, Ana Catarina Lima, Vitor Correia, Nikola Peřinka, Senentxu Lanceros-Mendez and Pedro Martins
Materials 2020, 13(7), 1729; https://doi.org/10.3390/ma13071729 - 7 Apr 2020
Cited by 20 | Viewed by 4571
Abstract
Magnetic sensors are mandatory in a broad range of applications nowadays, being the increasing interest on such sensors mainly driven by the growing demand of materials required by Industry 4.0 and the Internet of Things concept. Optimized power consumption, reliability, flexibility, versatility, lightweight [...] Read more.
Magnetic sensors are mandatory in a broad range of applications nowadays, being the increasing interest on such sensors mainly driven by the growing demand of materials required by Industry 4.0 and the Internet of Things concept. Optimized power consumption, reliability, flexibility, versatility, lightweight and low-temperature fabrication are some of the technological requirements in which the scientific community is focusing efforts. Aiming to positively respond to those challenges, this work reports magnetic proximity sensors based on magnetoelectric (ME) polyvinylidene fluoride (PVDF)/Metglas composites and an excitation-printed coil. The proposed magnetic proximity sensor shows a maximum resonant ME coefficient (α) of 50.2 Vcm−1 Oe−1, an AC linear response (R2 = 0.997) and a maximum voltage output of 362 mV, which suggests suitability for proximity-sensing applications in the areas of aerospace, automotive, positioning, machine safety, recreation and advertising panels, among others. Full article
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11 pages, 2729 KiB  
Article
Structural, Magnetic and Optical Properties of Gd and Co Co-Doped YFeO3 Nanopowders
by Meng Wang and Ting Wang
Materials 2019, 12(15), 2423; https://doi.org/10.3390/ma12152423 - 30 Jul 2019
Cited by 29 | Viewed by 3019
Abstract
YFeO3, YFe0.95Co0.05O3, Y0.95Gd0.05FeO3 and Y1−xGdxFe0.95Co0.05O3 (x = 0.0, 0.05, 0.10, 0.15 and 0.20) nanopowders were successfully fabricated via a low-temperature solid-state [...] Read more.
YFeO3, YFe0.95Co0.05O3, Y0.95Gd0.05FeO3 and Y1−xGdxFe0.95Co0.05O3 (x = 0.0, 0.05, 0.10, 0.15 and 0.20) nanopowders were successfully fabricated via a low-temperature solid-state reaction technique. Results obtained using X-ray diffraction (XRD), scanning electron microscopy (SEM), and Raman spectra indicate that YFeO3 nanopowders with Gd3+ and Co3+ ions co-doping at Y and Fe-sites were fabricated at 800 °C in sizes below 50 nm, and a distorted structure was obtained. Magnetic hysteresis loop analyses illustrate that ferromagnetic behavior of YFeO3 nanopowders can be enhanced with the addition of Gd and Co. Whereas the maximum and remnant magnetization of the powders were found to be about 5.24 and 2.6 emu/g, respectively, the optical band gap was around 2.4 eV, proving that co-doped YFeO3 nanopowders have a strong capability to absorb visible light. Because both magnetic and optical properties of these materials are greatly improved with the addition of Gd and Co, one can expect the scope of their potential application in the magnetic and optical fields to increase. Full article
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Review

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25 pages, 8289 KiB  
Review
Magnetoelectrics: Three Centuries of Research Heading Towards the 4.0 Industrial Revolution
by Nélson Pereira, Ana Catarina Lima, Senentxu Lanceros-Mendez and Pedro Martins
Materials 2020, 13(18), 4033; https://doi.org/10.3390/ma13184033 - 11 Sep 2020
Cited by 40 | Viewed by 4688
Abstract
Magnetoelectric (ME) materials composed of magnetostrictive and piezoelectric phases have been the subject of decades of research due to their versatility and unique capability to couple the magnetic and electric properties of the matter. While these materials are often studied from a fundamental [...] Read more.
Magnetoelectric (ME) materials composed of magnetostrictive and piezoelectric phases have been the subject of decades of research due to their versatility and unique capability to couple the magnetic and electric properties of the matter. While these materials are often studied from a fundamental point of view, the 4.0 revolution (automation of traditional manufacturing and industrial practices, using modern smart technology) and the Internet of Things (IoT) context allows the perfect conditions for this type of materials being effectively/finally implemented in a variety of advanced applications. This review starts in the era of Rontgen and Curie and ends up in the present day, highlighting challenges/directions for the time to come. The main materials, configurations, ME coefficients, and processing techniques are reported. Full article
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