Magnetic Filler Research Articles

Magnetic‐Oriented Nickel Particles and Nickel‐Coated Carbon Nanotubes: An Efficient Tool for Enhancing Thermal Conductivity of PDMS Composites

AbstractIn this study, PDMS composites are thermally cured with nickel particles and nickel‐coated carbon nanotubes as fillers. Both fillers are oriented with the aim to increase the thermal conductivity of the silicone polymer network, due to the formation of a continuous thermal path. Scanning electron microscopy (SEM) gives a picture of the polymer network's morphology, proving the effective alignment of the nickel particles. Rheology and attenuated total reflectance Fourier transform infrared spectroscopy (ATR‐FTIR) studies confirm the full curing of the silicon network and no influence in the curing kinetics of the type and content of fillers and their orientation. Dynamic mechanical thermal analysis (DMTA) and tensile analysis show instead different thermo‐mechanical behavior of the polymer network due to the presence of different fillers, different fillers percentage, and orientation. Finally, the thermal transmittance coefficient (k) is studied by means of hot disk analysis, revealing the increment of almost 200% due to magnetic filler orientation.

Polymer-bonded magnets produced by laser powder bed fusion: Influence of powder morphology, filler fraction and energy input on the magnetic and mechanical properties

Bonded permanent magnets are key components in many energy conversion, sensor and actuator devices. These applications require high magnetic performance and freedom of shape. With additive manufacturing processes, for example laser powder bed fusion (LPBF), it is possible to produce bonded magnets with customized stray field distribution. Up to now, most studies use spherical powders as magnetic fillers due to their good flowability. Here, the behavior of large SmFeN platelets with a high aspect ratio as filler material and its influence on the arrangement and the resulting magnetic properties are examined in comparison to a spherical magnetic filler. The 3D distribution and orientation of the magnetic filler was studied by computed tomography and digital image analysis. The platelet-shaped particles align themselves perpendicular to the buildup direction during the process, which offers a new and cost-effective way of producing composites by LPBF with anisotropic structural and functional properties. The influence of LPBF parameters on the properties of the composites is investigated. Highest filling fractions are required for high magnetic remanence, however the powder itself limits this maximum due to particle shape and required minimal polymer fraction to form mechanically stable magnets. The coercivity decreases for higher filling fractions, which is attributed to increased rotation of insufficiently embedded magnetic particles in the matrix. It is discussed how filler morphology influences the observed change in coercivity since the rotation of spherical particles in comparison to platelet-shaped particles requires less energy. Our work shows the challenges and opportunities of large platelet shaped fillers used in LPBF for the production of anisotropic functional and structural composites.

The influence of carbonyl iron and magnetite ferrite on the electromagnetic behavior of nanostructured composites based on epoxy resin/buckypapers

Due to their remarkable mechanical and electrical properties, carbon nanotubes (CNTs) and their composites are great candidates for materials with improved electromagnetic and electrical properties. Above all, when used in conjunction with magnetic particles, for example, carbonyl iron and ferrites, the energy losses can be improved, minimizing the microwave reflections. This work studies the influence of magnetic particles (carbonyl iron and magnetite ferrite) on the electromagnetic behavior of carbon nanotube buckypaper (BP) reinforced epoxy composites over the frequency range 8.2 – 12.4 GHz. Firstly, the carbonyl iron and magnetite ferrite were dispersed in the epoxy resin, and their electromagnetic properties were analyzed. Epoxy/carbonyl iron composites showed reduced reflection losses at 10 GHz (SER = 1.52–1.99 dB) and improved absorption results (SEA = 0.47–5.78 dB). Epoxy/magnetite samples showed higher SER and SEA than carbonyl iron samples, with values ranging around 1.72–3.93 dB and 0.43–7.21 dB at 10 GHz, respectively. The addition of carbon nanotube buckypaper in the carbonyl iron composites resulted in SEA values up to 19.68 dB at 10 GHz. Besides, the BP/magnetite composites showed SEA of 18.58 dB at the same frequency. The total shielding efficiency (SET) was reached with 40 % wt. of magnetite (SET = 21.60 dB, at 10 GHz) and 70 % wt. of carbonyl iron (SET = 23.43 dB, at 10 GHz). Despite the variation in the magnetic filler concentration, all ternary hybrid composites showed increased absorption properties. This behavior is attributed to the synergistic effect between both magnetic particles and carbon nanotube buckypaper on the shielding properties of the studied composites.

Fabrication and comparison of mechanical and EMI shielding properties of various fibre reinforced multi-layered epoxy composites

The present work deals with the comparison of the various Fibre Reinforced Epoxy Composites (FRECs) for EMI shielding applications. The fabrication of the FRECs was done by simple hand-lay-up method. The composites consisting of silk fibre, glass fibre, carbon fibre with single and double layer and the hybrid of these three fibres. The collation of different FRECs revealed that the properties of the neat epoxy could be improved by the reinforcement of fibres. The double layered composites showed high tensile strength and flexural strength than the single layered composites whereas the EMI shielding property of the both single and double layered composites remain unchanged. Among FRECs, the CFRP-2 composite showed excellent mechanical properties with 24.9 N/mm2 tensile strength and 140.5 N/mm2 flexural strength. Also, the CFRP and hybrid composites exhibited nearly same EMI shielding Effectiveness (SE) value of around −27dB to −29.7 dB in the X-band frequency range. The work imparted the dominance of absorption phenomenon over the reflection in the prepared FRECs. Being insulators, Glass fibre, silk fibre and epoxy, GFRP and SFRP composites showed low EMI SE value. However, the EMI shielding property of these composites can be increased by incorporating conducting and magnetic fillers to the composites. Hence, the FRECs due to its light weight, corrosion resistance and high mechanical properties became the potential candidate for developing EMI shielding material over conventional metals.

Influence of alternating magnetic field's frequency and exposure time on distribution of α‐Fe 2 O 3 / TiO 2 fillers for gas separation membranes: Quantitative approach

Poly(2,6-dimethyl-1,4-phenylene oxide) membrane with magnetic α-Fe2O3/TiO2 fillers was exposed to varying alternating magnetic field (AMF) duration and frequency. The AMF threshold time was 8 min as mixed-matrix membrane (MMM) exposed to 11 min experienced an abrupt increase in permeability of CO2 by 785% and CH4 by 1322%. Although quantitative measurements showed relatively excellent values at 11 min, prolonged exposure time reduces selectivity, possibly due to interruption in the polymer-filler interfacial area densification process. Filler distribution measured quantitatively via optical microscope and MATLAB also revealed that MMM exposed to 3.3 kHz presents the greatest dispersion metric with the least agglomeration. MMM exposed to the frequency of 30 Hz or 330 kHz suffered from either increased agglomeration size or worse dispersion. Consequently, their gas separation performances were lower than MMM exposed to 3.3 kHz. Above a critical frequency, repulsive hydrodynamic forces overcome the attractive forces between magnetic fillers.

Sandwich-Structured Surface Coating of a Silver-Decorated Electrospun Thermoplastic Polyurethane Fibrous Film for Excellent Electromagnetic Interference Shielding with Low Reflectivity and Favorable Durability.

Nowadays, high efficiency and low reflection electromagnetic interference (EMI) shielding materials have a wide potential application of electronic fields. However, it is still challenging to achieve long-term durability under external mechanical deformations or other harsh conditions. Herein, sandwich-structured surface coatings with a mixture of polydimethylsiloxane (PDMS)/carboxylated multiwalled carbon nanotube and magnetic ferriferous oxide nanoparticle hybrid fillers (MWCNTs-COOH/Fe3O4, MFs) are introduced onto a silver-decorated electrospun thermoplastic polyurethane (TPU) fibrous film to achieve both outstanding low reflective EMI shielding and favorable durability. The surface coatings not only act as an effective absorbing layer but also provide a micro-nano hierarchical superhydrophobic surface. The resultant film shows a remarkable conductivity (361.0 S/cm), an excellent EMI shielding effectiveness (SE) approaching 85.4 dB, and a low reflection coefficient value of 0.61. Interestingly, the obtained film still maintains an excellent EMI SE even after mechanical deformations or being immersed in strong acidic solution, alkaline solution, and organic solvents for 6 h. This work opens a new avenue for the design of low reflective EMI shielding films under harsh environments.

Formulation of Magneto-Responsive Hydrogels from Dually Cross-Linked Polysaccharides: Synthesis, Tuning and Evaluation of Rheological Properties.

Smart hydrogels based on natural polymers present an opportunity to fabricate responsive scaffolds that provide an immediate and reversible reaction to a given stimulus. Modulation of mechanical characteristics is especially interesting in myocyte cultivation, and can be achieved by magnetically controlled stiffening. Here, hyaluronan hydrogels with carbonyl iron particles as a magnetic filler are prepared in a low-toxicity process. Desired mechanical behaviour is achieved using a combination of two cross-linking routes—dynamic Schiff base linkages and ionic cross-linking. We found that gelation time is greatly affected by polymer chain conformation. This factor can surpass the influence of the number of reactive sites, shortening gelation from 5 h to 20 min. Ionic cross-linking efficiency increased with the number of carboxyl groups and led to the storage modulus reaching 10 Pa compared to 10 Pa–10 Pa for gels cross-linked with only Schiff bases. Furthermore, the ability of magnetic particles to induce significant stiffening of the hydrogel through the magnetorheological effect is confirmed, as a 10-times higher storage modulus is achieved in an external magnetic field of 842 kA·m. Finally, cytotoxicity testing confirms the ability to produce hydrogels that provide over 75% relative cell viability. Therefore, dual cross-linked hyaluronan-based magneto-responsive hydrogels present a potential material for on-demand mechanically tunable scaffolds usable in myocyte cultivation.

Mechanical and magneto-mechanical properties of styrene-butadiene-rubber-based magnetorheological elastomers conferred by novel filler-polymer interactions

This study was undertaken to explore the mechanical and magneto-mechanical properties of styrene butadiene rubber (SBR) based magnetorhelogical elastomers (MREs) reinforced with carbonyl iron particles (CIP) as a primary filler. Nanocarbon materials such as nano carbon black (NCB) and few layer graphene (FLG) were used as secondary fillers to reinforce the rubber matrix. The key purpose of this study is to demonstration how the mechanical and magneto-mechanical properties of MREs are related with filler-rubber interactions. CIP can reinforce rubber, although it contains micron size particles, and improvements in moduli and fracture toughness values indicate the formation of filler-rubber networks and interactions between the π-electrons of benzene and the d-orbital electrons of iron. Optimization of CIP filler loadings in SBR was performed using mechanical properties. Tensile strength and elongation at break were increased by increasing CIP loadings up to 15 vol%, and the addition of FLG at 2 vol% further improved mechanical and magneto-mechanical properties as compared with 17 vol% CIP in SBR-based MREs. The study shows that the addition of nano reinforcing filler and an optimum amount of magnetic filler enhances magnetic and mechanical properties, which would be useful for high-energy smart damping systems.

3D Printing of Soft Magnetoactive Devices with Thiol‐Click Photopolymer Composites

Magnetoresponsive polymers have gained increased attention in the design of soft actuators as they can be spatially as well as temporally activated and enable an external noninvasive control of movement. By introducing the magnetoresponsive properties in photocurable resins, one can fabricate personalized and complex structures (via vat photopolymerization 3D printing), whose movement can be conveniently controlled by an external magnetic field. Advancing from acrylate‐based photopolymers, which often suffer from shrinkage stress, low monomer conversion, and oxygen inhibition, the fabrication of magnetoresponsive thiol‐click photopolymers containing Fe3O4 nanoparticles as magnetic fillers is highlighted. The addition of the thiol crosslinker yields soft and flexible polymer composites, whose cure kinetics, viscosity, thermal, and mechanical properties are studied as a function of the thiol and filler content. Although cure rate and final monomer conversion decrease with rising filler concentration, the cure kinetics is reasonably fast at 6 wt%. The short pot life, a result of thiol‐Michael reactions induced by Fe3O4 nanoparticles, and a high thiol content, are overcome by the addition of an appropriate stabilizer. As proof of concept, 3D structures are fabricated by digital light processing (DLP) 3D printing and their magnetically driven movement is demonstrated.

Possibilities in Recycling Magnetic Materials in Applications of Polymer-Bonded Magnets

Polymer-bonded magnets have increased significantly in the application of drive technology, especially in terms of new concepts for the magnetic excitation of synchronous or direct current (DC) machines. To satisfy the increasing demand of hard magnetic filler particles and especially rare earth materials in polymer-bonded magnets, different strategies are possible. In addition to the reduction in products or the substitution of filler materials, the recycling of polymer-bonded magnets is possible. Different strategies have to be distinguished in terms of the target functions such as the recovery of the matrix material, the filler or both materials. In terms of polymer-bonded magnets, the filler material—especially regarding rare earth materials—is important for the recycling strategy due to the limited resource and high costs. This paper illustrates two different recycling strategies relative to the matrix system of polymer-bonded magnets. For thermoset-based magnets, a thermal strategy is portrayed which leads to similar magnetic properties in terms of the appropriated atmosphere and process management. The mechanical reusage of shreds is analyzed for thermoplastic-based magnets. The magnetic properties are reduced by about 20% and there is a change in the flow conditions and with that, an influence on the pole accuracy.

Aluminum-titanium-cobalt substituted epsilon iron oxide nanosize hard magnetic ferrite for magnetic recording and millimeter wave absorption

We synthesized aluminum-titanium-cobalt substituted epsilon iron oxide (ATC-ε-Fe2O3), ε-Al0.11Ti0.04Co0.05Fe1.80O3 (1), ε-Al0.14Ti0.04Co0.05Fe1.77O3 (2), and ε-Al0.26Ti0.04Co0.05Fe1.65O3 (3). The magnetic coercive field (Hc) values are 7.1 kOe (1), 6.5 kOe (2), and 4.4 kOe (3). Zero-field ferromagnetic resonance frequencies (fr) were observed at 112 GHz (1), 109 GHz (2), and 100 GHz (3) using terahertz time-domain spectroscopy. These Hc and fr values are suitable for high-density magnetic recording and high-frequency millimeter wave absorbers. Additionally, the present series is non-toxic, low-cost, and could be used as practical magnetic fillers for magnetic recording and millimeter wave absorber applications.

Magnetic Self-Healing Composites: Synthesis and Applications.

Magnetic composites and self-healing materials have been drawing much attention in their respective fields of application. Magnetic fillers enable changes in the material properties of objects, in the shapes and structures of objects, and ultimately in the motion and actuation of objects in response to the application of an external field. Self-healing materials possess the ability to repair incurred damage and consequently recover the functional properties during healing. The combination of these two unique features results in important advances in both fields. First, the self-healing ability enables the recovery of the magnetic properties of magnetic composites and structures to extend their service lifetimes in applications such as robotics and biomedicine. Second, magnetic (nano)particles offer many opportunities to improve the healing performance of the resulting self-healing magnetic composites. Magnetic fillers are used for the remote activation of thermal healing through inductive heating and for the closure of large damage by applying an alternating or constant external magnetic field, respectively. Furthermore, hard magnetic particles can be used to permanently magnetize self-healing composites to autonomously re-join severed parts. This paper reviews the synthesis, processing and manufacturing of magnetic self-healing composites for applications in health, robotic actuation, flexible electronics, and many more.

Tuning magnetorheological functional response of thermoplastic elastomers by varying soft‐magnetic nanofillers

AbstractMagnetorheological elastomers (MREs) are increasingly demanded based on their ability to modify their mechanical properties under an applied magnetic field, applications ranging from active control in industrial processes to biomedicine. Those materials are based on a polymer phase and magnetic fillers. This work reports on the evaluation of the effect of the magnetic filler characteristics on the physical–chemical and functional performance of MREs. Composites have been produced with 20 wt% concentration of six different magnetic fillers: CoFe2O4, Fe3O4, Co, Ni, and Ni80Fe17Mo3 (Permalloy) in a SEBS matrix. Elastic modulus increases from 0.7 MPa for the pristine polymer to a maximum value of 1.8 MPa for the sample with Fe3O4. The highest saturation magnetization being obtained for the composite containing magnetite, with 17.8 A m2 kg−1. The filler size, saturation magnetization and coercivity all have significant impact on the magnetorheological (MR) effect. The highest MR effect is achieved when using Fe3O4 nanoparticles (17%), followed by Co (16%), Ni (14%), CoFe2O4 (11%), and finally Permalloy (8%). For the Fe3O4@SEBS composite, the MR response is among the largest reported in the literature but with a much lower filler content (6 vol% versus more than 20 vol%), with a positive effect on processability and integration into devices.

Evaluating the dynamic‐mechanical and thermal stability of polyphenylene sulfide composites filled with magnetic filler for sensor applications

AbstractIsotropic polyphenylene sulfide (PPS) composites filled with the magnetic fillers strontium ferrites (SrFeO) and neodymium iron boron (NdFeB) at two concentrations of 52 vol.% and 60 vol.% were prepared by the injection molding technique without use of an external magnetic field. Frequency sweeps shows that the mechanical frequency has little influence on the strength of all PPS samples and only ensures a higher mobility of the PPS chain ends at high frequency. Increasing the magnetic filler content and the use of NdFeB instead of SrFeO provide the PPS composites a larger structural robustness making them more resistant to mechanical loads and mechanically more stable. The temperature behavior of the PPS composites shows independently of the filler a strong softening from 80 °C. Nevertheless, larger operating temperatures below the glass transition temperature appear realistic.

Electrospun TaC/Fe3C–Fe carbon composite fabrics for high efficiency of electromagnetic interference shielding

Electromagnetic (EM) waves usually interfere with the normal use of electric devices leading to the necessity of developing electromagnetic interference (EMI) shielding materials with light weight and strong reflection ability. Innovative carbon-based materials incorporated with conductive and magnetic fillers have aroused wide concern. Herein, we fabricated TaC/Fe3C–Fe carbon composite fabrics via electrospinning technology and high-temperature pyrolysis, which exhibited low density (0.34 g cm-3), excellent electrical conductivity (15.4 S cm-1), and good saturation magnetization (13.3 emu g-1). By investigating the optimum mass ratio of Ta and Fe, the maximum EMI shielding performance of 46.4 dB could be achieved with a thickness of 0.18 mm. And the loss mechanism was mainly based on reflection. It is expected to become a potential EMI shielding material in some commercial applications.

Flexible magnetoelectric coupling nanocomposite films with multilayer network structure for dual-band EMI shielding

The rapid development of electronic information technology has brought huge challenges to high-performance electromagnetic interference (EMI) shielding films, especially for multi-band shielding. In this work, the core-shell structure of polydopamine coated silver nanowires (AgNWs) was formed by in situ polymerization of dopamine on the surface of AgNWs, the modified AgNWs were attached to the layered graphene surface through noncovalent bonds, magnetic Fe3O4 particles were then loaded on graphene/AgNWs to form magnetoelectric coupling fillers and cast with polyvinyl alcohol (PVA) to obtain nanocomposite films. The conductive fillers were uniformly dispersed in the PVA matrix with well compatibility, the resulting composite films not only displayed good flexibility, but also had been first time reported to show fine EMI shielding performance in both GPS band and X band thanks to the synergistic effect from the combination of conductive and magnetic fillers through an innovative structure. These nanocomposite films with good EMI shielding properties would show good application prospects in the fields of flexible electronics, electromagnetic countermeasure and stealth materials.

Magnetic Soft Millirobots 3D Printed by Circulating Vat Photopolymerization to Manipulate Droplets Containing Hazardous Agents for In Vitro Diagnostics.

3D printing via vat photopolymerization (VP) is a highly promising approach for fabricating magnetic soft millirobots (MSMRs) with accurate miniature 3D structures; however, magnetic filler materials added to resin either strongly interfere with the photon energy source or sediment too fast, resulting in the nonuniformity of the filler distribution or failed prints, which limits the application of VP. To this end, a circulating vat photopolymerization (CVP) platform that can print MSMRs with high uniformity, high particle loading, and strong magnetic response is presented. After extensive characterization of materials and 3D printed parts, it is found that SrFe12 O19 is an ideal magnetic filler for CVP and can be printed with 30% particle loading and high uniformity. By using CVP, various tethered and untethered MSMRs are 3D printed monolithically and demonstrate the capability of reversible 3D-to-3D transformation and liquid droplet manipulation in 3D, an important task for in vitro diagnostics that are not shown with conventional MSMRs. A fully automated liquid droplet handling platform that manipulates droplets with MSMR is presented for detecting carbapenem antibiotic resistance in hazardous biosamples as a proof of concept, and the results agree with the benchmark.

Impact of the Nanocarbon on Magnetic and Electrodynamic Properties of the Ferrite/Polymer Composites.

Binary and ternary composites (CM) based on M-type hexaferrite (HF), polymer matrix (PVDF) and carbon nanomaterials (quasi-one-dimensional carbon nanotubes—CNT and quasi-two-dimensional carbon nanoflakes—CNF) were prepared and investigated for establishing the impact of the different nanosized carbon on magnetic and electrodynamic properties. The ratio between HF and PVDF in HF + PVDF composite was fixed (85 wt% HF and 15 wt% PVDF). The concentration of CNT and CNF in CM was fixed (5 wt% from total HF + PVDF weight). The phase composition and microstructural features were investigated using XRD and SEM, respectively. It was observed that CM contains single-phase HF, γ- and β-PVDF and carbon nanomaterials. Thus, we produced composites that consist of mixed different phases (organic insulator matrix—PDVF; functional magnetic fillers—HF and highly electroconductive additives—CNT/CNF) in the required ratio. VSM data demonstrate that the main contribution in main magnetic characteristics belongs to magnetic fillers (HF). The principal difference in magnetic and electrodynamic properties was shown for CNT- and CNF-based composites. That confirms that the shape of nanosized carbon nanomaterials impact on physical properties of the ternary composited-based magnetic fillers in polymer dielectric matrix.

Study of effective particle shape-dependent magnetization behavior of soft magnetic polymeric composites

This reports an investigation of the effect of magnetic particles with same chemical composition but different aspect ratios on the effective magnetization response of magnetorheological elastomers (MREs). MREs are composites that consist of magnetically permeable particles dispersed in a non-magnetic polymeric matrix. These materials are known for the tunability of their magnetoelastic properties. When subjected to an externally applied magnetic field, changes occur in their mechanical properties such as stiffness; this is the so-called magnetorheological (MR) effect. This is usually attributed to the magnetic interactions between the magnetic filler particles. Several factors significantly influence the MR effect. These are the polymer matrix, volume fraction, size, and shape of the magnetic particles. In this study, based on continuum formulation theory, microscale modeling using a finite element analysis (FEA) was used to determine the effect of the latter on the macroscopic magnetization of MREs. Using Jiles-Atherton hysteresis model parameters, the hysteresis loops of MRE were numerically resolved in the FEA software COMSOL Multiphysics. The model calculations were performed for randomly oriented (unaligned) and aligned microstructures with constant particle-volume fraction (φ= ∼20%) and varying particle-aspect ratios (AR=1, 2.5, 5 and 7.5). A computational homogenization scheme was used to relate the microscopic behavior to the macroscopic properties of these composites. From the analysis, it was found that for unaligned MRE the effective magnetization increased with increase in the particle aspect ratio, particularly in the linear region, while the saturation magnetization is seen to be independent of the particle shape. The effect is much more noticeable for particles aligned with the applied field, while for particles aligned perpendicular to the applied field an opposite effect is seen, where increasing aspect ratio results in decreased magnetization relative to the applied field.

Multitasking Performance of Fe3O4/BaTiO3/Epoxy Resin Hybrid Nanocomposites

In this study, hybrid nanocomposites consisting of Fe3O4/BaTiO3/epoxy resin were prepared with varying amounts of filer content. Structural and morphological characterization, conducted via X-Ray Diffraction patterns and Scanning Electron Microscopy images, revealed the successful fabrication of composites and fine dispersion of inclusions. Thermomechanical properties are studied via Differential Scanning Calorimetry, Thermogravimetric Analysis, Dynamic Mechanical Analysis and static mechanical tests. Hybrid composites exhibit enhanced thermal stability and improved mechanical response. Indicatively, Young’s modulus, tensile strength and fracture toughness increase from 1.26 GPa, 22.25 MPa, and 3.03 kJ/m3 for the neat epoxy to 1.39 GPa, 45.73 MPa, and 41.08 kJ/m3 for the composites with 20 or 15 parts per hundred resin per mass (phr) of Fe3O4, respectively. Electrical behavior is investigated via Broadband Dielectric Spectroscopy and ac conductivity measurements. The real part of dielectric permittivity reaches the value of 11.11 at 30 °C for the composite with 40 phr of Fe3O4. The ability to store and retrieve electric energy on the nanocomposites is examined with the following parameters: the filler content and the applied voltage under dc conditions. Retrieved energy reaches 79.23% of the stored one, for the system with 15 phr of Fe3O4. Magnetic response is studied via a Vibrating Sample Magnetometer. Magnetic saturation, for the system with the highest magnetic filler content, obtains the value of 25.38 Am2/kg, while pure magnetic powder attains the value of 86.75 Am2/kg. Finally, the multifunctional performance of the nanocomposites is assessed regarding all the exerted stimuli and the optimum behavior is discussed.