Special Issue "Multifunctional Magnetic Nanocomposites: Innovative Processing and Applications"
Deadline for manuscript submissions: 31 December 2021.
Interests: Magnetic interactions and local electronic phenomena in intermetallics and oxides, molecular magnets, metal-organic compounds and catalysts, nanomagnetism and magnetic interactions and spin structure at the surface/interface of bilayer thin films with different magnetic anisotropies, exchange bias and exchange spring systems, multilayers, spintronics and spin-valves, magnetic nanopowders, magnetic nanoparticles dispersed in various solid state matrices, diluted magnetic semiconductors, magnetic fluids, magnetic nanocomposites, magnetofunctional materials
The main advantage of heterogeneous nanosystems is the possibility of combining and inter-influencing the electronic properties of constituent interfaced nanophases. Unique physicochemical properties of the hybrid material of interest in various applications can be obtained. The functionality of such systems can be provided by the possibility to actuate the most sensitive nanophase and to exploit the proper response of another nanophase which is directly or indirectly influenced by the actuated phase.
Multifunctional magnetic nanocomposites are among such heterogeneous nanosized systems where at least one phase component is magnetic and can act as an intermediate of either the actuation or the response of the system. As compared to the heterogeneous layered systems with at least one magnetic layer of nanometer thickness, also of high technological impact, multifunctional magnetic nanocomposites can be obtained by less expensive processing technologies. In addition, they present much extended specific surfaces and active interfaces which allow additional engineering of the application-oriented parameters through tunable morphologies of the nanosized components.
This Special Issue of Nanomaterials will report on the innovative processing, characterization, and applications of multifunctional magnetic nanocomposites consisting of different matrices (polymer-like, carbon-based, oxides, or intermetallics) embedded or decorated by different magnetic nanostructures (magnetic nanoparticles and nanowires of different organizations and of different structures from monophase to core–shell).
Dr. Victor Kuncser
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. Nanomaterials is an international peer-reviewed open access monthly 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 2200 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.
- nanosized magnetic structures
- surface and interface interactions
- magnetic-driven functionality and multifunctionality
- magnetic sensors and actuators
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.
Title: New Te-based zinc aluminophosphate glass with local clustering for magneto-optical applications
Authors: M. Elisa; R. C. Stefan; I. C. Vasiliu; S. M. Iordache; A-M. Iordache; M. I. Rusu; D. Savastru; B. A. Sava; L. Boroica; M. C. Dinca; A. V. Filip; M. Eftimie; A. C. Galca; C. Bartha; N. Iacob; V. Kuncser
Affiliation: a National Institute of R & D for Optoelectronics, INOE 2000, 409 Atomistilor Str., 077125, Magurele, Jud. Ilfov, Romania b National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Str, 077125 Magurele, Jud. Ilfov, Romania c University Politehnica of Bucharest, 313 Spl. Independentei, 060042, Bucharest, Romania d National Institute of Materials Physics, Atomistilor 405A, 077125, Magurele, Ilfov, Romania
Abstract: This work investigates structural, optical, magnetic and magneto-optical properties of a special Te-zinc-aluminophosphate glass, from 45ZnO-10Al2O3-40P2O5-5TeO2 system. The glass was prepared by a wet method of processing materials, followed by melting-stirring-quenching-annealing. Various parameters as glass density, oxygen packaging density, refractive index, molar refractivity, electronic polarizability, reflection loss, optical transmission, refractive index, band gap, optical basicity, magnetization reversal and rotation of the polarization vector have been considered. Temperature dependent magnetic measurements showed shifted hysteresis loops superposed over a diamagnetic signal, providing evidence not only for a diluted ferromagnetic oxide character but also for the presence of an atypical unidirectional anisotropy due to the interaction of the diluted ferromagnetic phase with Te2 nanosized clusters of local magnetic moments. The positive Faraday rotation angle evidenced from magneto-optical measurements correlated with this atypical enhanced magnetic response open the way for new magneto-optical applications of such transparent glass-like multifunctional magnetic nanocomposites.
Title: Original Anisotropic Architecture for Magneto-Optical Surface Plasmon Resonance Biosensing
Authors: Mathias Dolci; Xiaokun Ding; Yannick Dusch; Rabah Boukherroub; Sabine Szunerits; Philippe Pernod; Nicolas Tiercelin
Affiliation: Université de Lille, CNRS, Centrale Lille, ISEN, Université de Valenciennes, UMR8520, France
Abstract: Devices based on magneto-plasmonic modulation generate a strong interest due to their use in active plasmonic and biosensing applications. The combination of ferromagnetic (FM) and plasmonic (Pl) material in metallic sandwich trilayer structure (e.g. PL/FM/PL) allows to provide a transverse magneto-optical Kerr effect (TMOKE) of p-polarized light and exhibits improved physical sensitivity over classic surface plasmon resonance measurements. Here, we present experimental and theoretical study on a new anisotropic magneto-optical surface plasmon resonance (AMOSPR) sensor. The introduction of TbCo_2 /FeCo in the ferromagnetic layer provides a magnetic uni-axial anisotropy and leads to original magneto-plasmonic behavior. The study on this system will allow in the future to exploit the detection of biomolecules as well as new active functionalities
Title: High performance magnetic nanoparticles with tailored size and shape for localized hyperthermia applications
Authors: Izabella Crăciunescu; P. Palade; N. Iacob; G. Ispas; V. Kuncser; Rodica Turcu
Affiliation: 1 National Institute for Research and Development of Isotopic and Molecular Technologies, 400293 Cluj-Napoca, Romania 2 National Institute of Materials Physics, Bucharest-Magurele, Ilfov, 077125, Romania
Abstract: Iron oxide (Fe3O4) and ferrite (MeFe2O4, Me - Mn, Zn) hydrophobic magnetic nanoparticles were synthesized with various shapes and sizes, including spherical, cubic, hexagonal and octahedral, from high temperature reaction of organic precursor’s solution. Tailoring the shapes and sizes of nanoparticles allows controlling a variety of properties that are relevant to many potential applications of magnetic nanoparticles. Structurally well-formed hydrophobic magnetic nanoparticles with high saturation magnetization values, between 85-95 emu/g were obtained. The hydrophobic oleic acid (OA) shell it is transformed by a simple and environmentally friendly oxidative scission method into Azelaic Acid (AZA), which is a di-acid with a free carboxylic group which does the magnetic nanoparticles hydrophilic. This oxidative scission of OA does not induce aggregation, obtaining a very narrow dimensional distribution of magnetic nanoparticles following this process.
Title: High performance magnetorheological fluids: very high magnetization FeCo-Fe3O4 nanoclusters in ferrofluid carrier
Authors: Izabell Crăciunescu; Elena Chiţanu; Mirela M. Codescu; N.Iacob; A.Kuncser; V.Kuncser; V. Socoliuc; Daniela Susan-Resiga; Florica Bălănean; G. Ispas, S. Porav; Tϋnde Borbáth; I. Borbáth; L. Vékás; Rodica Turcu
Affiliation: 1-National Institute for R&D of Isotopic and Molecular Technologies (INCDTIM), Cluj-Napoca, Romania; 2-National R&D Institute for Electrical Engineering (ICPE-CA), Bucharest, Romania; 3-National Institute for R&D of Materials Physics (INCDFM), Bucharest-Magurele, Romania; 4-Romanian Academy–Timisoara Branch (RATB), Center for Fundamental and Advanced Technical Research, Timisoara, Romania; 5-ROSEAL Co., Odorheiu-Secuiesc, Romania.
Abstract: The behavior of conventional MR fluids is affected by irreversible aggregation and sedimentation, in-use thickening and abrasiveness, as well as severe redispersibility issues of the magnetizable component. In order to overcome these shortcomings recently various new formulations of MR fluids came into play. Among these, the extremely bidisperse ferrofluid based MR fluids show completely new features, such as increasing the attractive interaction force between ferromagnetic (Fe) microparticles due to the nonzero magnetic susceptivity of the ferrofluid carrier. Magnetic nanoparticles of the carrier are impeding direct contact between micrometer size ferromagnetic particles to prevent irreversible agglomeration and to provide aid to easy redispersion. The careful design of the composition and structure both at nano and micro level allows adapting the characteristics of MR fluids to the requirements of a wide range of semi-active devices, from seismic MR dampers and MR brakes to MR flow controllers for hydraulic machinery. In this paper we’ll focus on tailoring both the ferrofluid carrier and the magnetizable disperse phase in order to reduce the sedimentation rate and, at the same time, to favor intense and reversible particle structuring to provide a significant magnetorheological response. A new MR fluid was prepared using high colloidal stability polar ferrofluids and high magnetization FeCo-Fe3O4 nanoclusters. The high magnetization magnetic nanoclusters have been obtained by miniemulsion procedure using a mixture of surface passivated FeCo nanopowder and a high evaporation rate non-polar ferrofluid. The physico-chemical properties of the ferrofluid, surface passivated FeCo nanoparticles and FeCo-Fe3O4 nanoclusters investigated by different methods: TEM, SEM, HRTEM, EDAX, XPS, Mössbauer spectroscopy and VSM are reported. The evaluation of magnetorheological characteristics of the new MR fluid and a comparative analysis using previous results concerning nano-micro composite MR fluids are presented.
Title: Multifunctional GaFeO3, obtained via mechanochemical activation followed by calcination of equimolar nano-system Ga2O3-Fe2O3
Authors: L. Diamandescu; F. Tolea; M. Feder; F. Vasiliu; I. Mercioniu; M. Enculescu; T. Popescu
Affiliation: National Institute of Materials Physics, Atomistilor 405A, 077125, Magurele-Bucharest, Romania
Abstract: This work emphasizes the important role of mechanochemical activation (using High-Energy Ball Milling) in the synthesis of nano-structured multiferroic GaFeO3. X Ray Diffraction, Transmission Electron Microscopy and Mössbauer Spectroscopy were used to understand the phase evolution and mechanisms in the mechanochemical activation of the equimolar nano-system Ga2O3-Fe2O3, both as prepared or followed by subsequent calcination - to obtain the desired multifferoic nano-crystalline GaFeO3 at more friendly temperatures and with lower energy consumption. Thus, after heat treatment for 4 hours at 950 oC only the presence of GaFeO3 was evidenced, which means that the temperature for obtaining gallium ortho-ferrite was lowered by ~ 450 oC comparing to the temperatures at which this material is obtained by conventional solid phase reaction. Optical, photocatalytic and magnetic properties of representative samples highlights their multifunctional character.