Strontium Hexaferrite Nanoparticles Research Articles

The effect of the citric acid to metal nitrates molar ratio on the structural and magnetic properties of strontium hexaferrite nanoparticles synthesized by the sol-gel combustion method

Strontium hexaferrite is a hard ferrite with the chemical formula of SrFe12O19 and has a magnetoplumbite structure. Due to high anisotropy, high saturation magnetization, chemical stability, high corrosion resistance, and appropriate Curie temperature, it has been widely used as a permanent magnetic material. A novel sol-gel combustion process was used to synthesize ultrafine particles of strontium hexaferrite. The weight ratio of citric acid to the total weight of strontium and iron salts nitrate (CA/MN) is among the parameters affecting the purity of SrFe12O19 nanoparticles produced by the sol-gel method, which can improve the purity of the final product by controlling this parameter. M-type SrFe12O19 nanostructures with different citric acid to metal nitrates molar ratios (0.5, 1, 2, and 4) were prepared. The results showed that nitrate-citrate gels exhibit self-ignition behavior after combustion in the air at room temperature. The samples were then characterized by XRD, TGA/DTA, FTIR, FE-SEM, VSM. The results showed that the crystallite size of strontium hexaferrite is significantly affected by the molar ratio of citric acid to metal nitrates. As the molar ratio of citric acid to metal nitrates increases, the size of nanostructures decreases. By increasing the molar ratio of citric acid from 0.5 to 1, the saturation magnetization and magnetic remanence magnetization increase, but the coercive field decreases.

Controlling the physical properties of polyacrylonitrile by strontium hexaferrite nanoparticles

AbstractThe formulation of polymer with embedded magnetic nanoparticles results in promising nanocomposites for smart and analytical applications. Nanocomposites containing polyacrylonitrile (PAN) and different mass contents of strontium hexaferrite (SFO) were prepared using the casting method. The nanocomposite samples were characterized by using different techniques such as field-emission scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, differential scanning calorimetry, and thermogravimetric analysis. Dielectric investigations of SFO/PAN nanocomposites showed that the permittivity and conductivity are considerably enhanced as the content of SFO increased. Optical properties revealed that the absorption and transmittance spectra were significantly affected by adding SFO nanoparticles to the PNA polymer matrix. To investigate the magnetic properties of the nanocomposite samples, the vibrating sample magnetometer was used. The magnetic hysteresis loops illustrated the ferromagnetic nature of SFO/PAN nanocomposites. Different magnetic parameters were given, and they depend on the content of PAN in the nanocomposites.

Novel candidate theranostic radiopharmaceutical based on strontium hexaferrite nanoparticles conjugated with azacrown ligand.

In this article, we report to the best of our knowledge the first modification of NPs with ligands for combined radiopharmaceuticals. Nanoparticles with suitable magnetic properties can be used both for diagnostics as a contrast for MRI and for therapy, including the insufficiently studied magneto-mechanical therapy. Strontium hexaferrite is one of the few hard-magnetic materials for which stable biocompatible colloidal solutions can be obtained. Strontium hexaferrite nanoparticles coated with silicon dioxide (SHF@SiO2) were modified with an amino silane coupling agent (3-aminopropyl)triethoxysilane and azacrown ether derivatives with six heteroatoms in rings were covalently linked to the amine group through the carboxyl group. The hard magnetic nanoparticles were then radiolabeled with 207Bi with a labelling yield of up to 99.8%. In vitro experiments showed that the complex SHF@SiO2-APTES-L2-207Bi is stable enough to be a potential theranostic radiopharmaceutical.

Influence of High Temperature on the Crystal Structure of SrFe12O19 Nanoparticle

In this study, strontium hexaferrite nanoparticles synthesized by sol–gel autocombustion method and the effect of high annealing temperature on produced nanoparticle have been studied. Powders were annealed at 1,000 and 1,300°C. Structural properties of synthesized powders were analyzed by X-ray diffraction (XRD). Hexagonal structure and shape of SrFe12O19 nanoparticles were analyzed from field-emission scanning electron microscope and transmission electron microscope figures. Fourier-transform infrared spectroscopy confirmed the formation of an M-type hexagonal structure. The thermal behavior of nanoparticles has been investigated by thermogravimetric analysis (TGA and DTG). Height measurement of nanoparticles with 2D and 3D images of the surface obtained from atomic force microscopy. XRD pattern of strontium hexaferrite nanoparticle was used for determining the crystal structure and examining the effect of high annealing temperature on powders by finding lattice parameters, densities, crystallite size, specific surface area, and strain. Crystallite size, strain, and bulk density decreased when produced nanoparticles annealed at 1,000°C with decreased porosity when nanoparticles were annealed at 1,300°C. The specific surface area was found to be increased when nanoparticles were annealed at 1,000°C. In this study, influence of high temperature on the structure of SrFe12O19 nanoparticles was studied.

Improved Electrical Properties of Strontium Hexaferrite Nanoparticles by Co2+ Substitutions.

In this work, the sol-gel route was employed to synthesize a series of Co2+-substituted strontium hexaferrite nanoparticles (Sr1-x Co x Fe12O19, x = 0.0-0.50) to study the effect of cobalt ions doping on the magnetic, electrical, and structural properties of the nanoparticles. The structural analysis of the synthesized nanoparticles, performed by X-ray diffraction, showed the formation of a hexagonal structure having no secondary phases. The morphological analysis, performed through scanning electron microscopy, revealed spherical shaped nanoparticles with uniform distribution. Fourier transform infrared spectra demonstrated two consistent absorption bands indicating the intrinsic stretching vibrations around 600 and 400 cm-1 for tetrahedral and octahedral sites, respectively. It was observed through VSM that with cobalt addition, the saturation magnetization increased and the coercivity decreased. Also, a typical decreasing trend of DC electrical resistivity with increasing temperature measured by a two-probe method confirmed the semiconducting behavior of the synthesized samples. An impedance analyzer was used for the dielectric measurements at room temperature against the alternating frequency range of 250 Hz to 5 MHz, and it was found that the dielectric constant decreased with the increase in cobalt content, suggesting that the doped nanomaterials can be used for microwave absorption, electronics, telecommunication, and other high-frequency applications.

Yttrium doped strontium nano hexaferrites: Influence of yttrium on the structural and magnetic properties of sol-gel synthesized nanocrystalline strontium hexaferrite

Yttrium (Y3+)-substituted strontium hexaferrite nanoparticles with composition SrFe12-x Y x O19 have been synthesized using the sol-gel method. Diverse analytical tools have been applied to characterize the prepared strontium hexaferrite nanoparticles and to analyse the influence of yttrium (Y3+) substitution on the structural and magnetic properties. X-ray diffraction patterns confirm the presence of single phase M-type hexagonal crystalline structure. In fourier-transform infrared spectroscopy, the absorption bands at low wavenumber confirmed the formation of hexagonal ferrites. The vibrating sample magnetometer has been employed to study the magnetic behavior of Y3+ ions substituted strontium hexaferrite. The decrease in saturation magnetization (Ms) and coercivity (Hc) value has been explained on the basis of alteration in magnetic interactions due to the replacement of both Fe3+ ions by the non-magnetic Y3+ ions.

Magnetic, structural, and fluorescence properties of Sr-hexaferrite nanoparticles embedded in a PV-OH film

The magnetic and fluorescence properties were studied for a polymer nanocomposite (PNC) based on strontium hexaferrite (Sr-M) nanoparticles embedded in a polyvinyl alcohol (PV–OH) matrix. This study reveals the effect of nanoparticles operating on the structural behavior and the functional properties of the polymer nanocomposite. The X-ray diffraction and the Rietveld method showed a change of the PV-OH semi crystallinity as the number of nanoparticles varies in the composite. This behavior has been related to the close interactions between the nanoparticles and the polymer which show to be capable of modifying the structural and functional properties of the matrix. Here, the nanoparticles promote a fluorescence quenching as the nanoparticles increase. Then, a close relationship between the polymer structure and its functional properties is discernible. Also, the number of nanoparticles and their arrangement in the PNCs promote the emergence of magnetic interactions which change the micromagnetic properties of the system.

Investigation of microstructural and magnetic properties of Ca2+ doped strontium hexaferrite nanoparticles

The effect of Ca2+ ions doping on the structure, magnetic properties, and surface morphology of Sr1-xCaxFe12O19 (x = 0.0 to 0.5 with step size 0.1) hexaferrite nanoparticles synthesized using the sol–gel auto-combustion technique was investigated in the current study. The phase purity of synthesized samples is confirmed by XRD data plots up to x = 0.2, after which α-Fe2O3 was observed as a secondary phase in all concentrations. The micrographs from FESEM show that with the increase in the concentration of Ca2+ dopant, the average grain size increases from ≈125 nm to ≈240 nm. The intensity of secondary phase Raman peaks increases with increasing dopant ion concentration beyond x = 0.2. The coercivity value varies between 5292 and 5828 Oe as the Ca2+ dopant increases. A maximum (72.63 emu/g) value of saturation magnetization (Ms) have been obtained in samples at x = 0.2. Such substances can be utilized for making permanent magnets applications.

Solar-light-driven photocatalytic performance of Cr and Co doped Sr1-xCoxFe12-yCryO19 and effect of doping on optical, structural and dielectric properties

A series of Co2+ and Cr3+ doped strontium hexaferrite (Sr1-xCoxFe12-yCryO19) nanoparticles were synthesized via micro-emulsion technique. Effect of Co and Cr ions doping was estimated using structural, dielectric, photocatalytic and optical properties of Sr1-xCoxFe12-yCryO19. The Sr1-xCoxFe12-yCryO19 were characterized employing X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FTIR), (Scanning electron microscopy) SEM and UV–Vis spectroscopy. The XRD analysis confirmed formation of hexagonal M-type ferrites with average crystallite size of 38 nm. Dielectric properties analysis revealed that the of Sr1-xCoxFe12-yCryO19 has high dielectric constant, low dielectric and tangent loss versus SrFe12O19. The band gap energy decreased with the Co2+ and Cr3+ contents due to incorporation of sub band gaps and reduction of particle size. The photocatalytic activity (PCA) of Sr1-xCoxFe12-yCryO19 was evaluated by degrading the Rhodamine B (RhB) dye under solar light irradiation. The Sr1-xCoxFe12-yCryO19 degraded up to 87.6% of dye in 45 min of solar light irradiation with rate constant of 0.03834 min−1. Results revealed that Co2+ and Cr3+ doping tuned the optical properties and Sr1-xCoxFe12-yCryO19 has potential to harvest the solar light for photocatalytic applications. The high electrical conductivity and tuned band gap make such materials as feasible to utilize them efficiently in photovoltaic cells, SOFCs and as an encouraging photocatalyst for water remediation.

Green synthesis of SrFe12O19@Ag and SrFe12O19@Au as magnetic plasmonic nanocomposites with high photocatalytic performance for degradation of organic pollutants

Magnetic-plasmonic nanocomposites are suitable candidates for photocatalytic activity due to both optical and magnetic properties. So initially, we synthesized strontium hexaferrite nanoparticles (NPs) by three different methods: microwave, sol-gel Pechini, sol-gel auto-combustion, and SrFe12O19@Ag, SrFe12O19@Au core-shell by ultrasound-assisted auto-combustion in the presence of beetroot juice. X-Ray Powder Diffraction (XRD), Fourier Transform Infrared (FT-IR), Energy Dispersive X-Ray (EDX), Field Emission Scanning Electron Microscopy (FE-SEM), Transmission Electron Microscopy (TEM), Brunauer-Emmett-Teller (BET), Diffuse Reflectance Spectroscopy (DRS), and Vibrating Sample Magnetometer (VSM) analyses were utilized to examine their purity, morphology, optical and magnetic properties. The nanoproducts were applied as photocatalysts to degrade the anionic dyes with different chromophores under various visible light sources within 2 h. Among different dyes (mono-azo, diazo, anthraquinone, and triaryl methane), Eosin as a triaryl methane dye had the maximum degradation by SrFe12O19@Ag and SrFe12O19@Au, which are about 95.9%, 93.88%, respectively. Indeed, produced surface plasmon resonance (SPR) electrons by the noble metals facilitate the formation of active radicals to destruct the dyes.

Glass-Ceramic Synthesis of Cr-Substituted Strontium Hexaferrite Nanoparticles with Enhanced Coercivity.

Magnetically hard ferrites attract considerable interest due to their ability to maintain a high coercivity of nanosized particles and therefore show promising applications as nanomagnets ranging from magnetic recording to biomedicine. Herein, we report an approach to prepare nonsintered single-domain nanoparticles of chromium-substituted hexaferrite via crystallization of glass in the system SrO–Fe2O3–Cr2O3–B2O3. We have observed a formation of plate-like hexaferrite nanoparticles with diameters changing from 20 to 190 nm depending on the annealing temperature. We demonstrated that chromium substitution led to a significant improvement of the coercivity, which varied from 334 to 732 kA m−1 for the smallest and the largest particles, respectively. The results provide a new strategy for producing high-coercivity ferrite nanomagnets.

Optimization Removal of the Ceftriaxone Drug from Aqueous Media with Novel Zero‐Valent Iron Supported on Doped Strontium Hexaferrite Nanoparticles by Response Surface Methodology

AbstractThe present study, a novel and efficient adsorbent nano zero‐valent iron stabilized on strontium hexaferrite (nZVI/SrFe12O19) was synthesized for removal of ceftriaxone antibiotic from aqueous solution. Its characteristics were analyzed by Fourier transform infrared spectroscopy (FTIR), X‐ray diffraction (XRD), scanning electron microscopy (SEM), and energy‐dispersive X‐ray spectroscopy (EDX). Response Surface Methodology (RSM) based on Box‐Behnken Design (BBD) were used to achieve the optimal experimental conditions. The effects of parameters such as pH (5‐9), initial concentration of ceftriaxone (5–15 mg L−1), and adsorbent dosage (0.05–0.15 g L−1) on removal efficiency were investigated. A mathematical model was studied to predict the removal performance. The significance and adequacy of the model were surveyed using analysis of variance (ANOVA). The results showed that second‐order polynomial model is suitable for the prediction removal of ceftriaxone. The highest removal value of mentioned drug were obtained 98 % at adsorbent dosage of 0.15 g L−1, pH=5, and the pollutant concentration of 10 mg L− 1. Finally, the isotherms and kinetic studies were evaluated. The Langmuir with R2=0.9981 and pseudo‐second‐order with R2=0.9996 were the best isotherm and kinetic, respectively. The thermodynamic parameters such as ΔH0, ΔS0, and ΔG0 were calculated and it was indicated that adsorption process was exothermic and spontaneous.

Design of Efficient Microwave Absorbers Based on Cobalt-Based MOF/SrFe10CoTiO19/Carbon Nanofibers Nanocomposite

In this study, nanocomposites with microwave absorption capability were synthesized based on cobalt-based MOF/SrFe10CoTiO19/carbon nanofibers. The microstructural, morphological, and magnetic characteristics were examined via X-ray diffraction, field emission scanning electron microscopy, and vibrating sample magnetometer, respectively. The microwave absorption properties of single-layer microwave absorbers were examined in the ku-band frequency range of 12.5–18 GHz. For the single-layer absorbers, the absorption characteristic of nanocomposite of all components is more efficient than that of sample containing just only cobalt-based MOF or doped strontium hexaferrite nanoparticles. The composite containing 70 wt.% cobalt-based MOF, 29 wt.% doped strontium hexaferrite, and 1 wt.% carbon nanofibers nanocomposite reached − 19 dB with 3.9 GHz bandwidth in the range of ku-band with the thicknesses of only 2.5 mm. The addition of carbon nanofibers (CNFs) has increased the interfacial polarization, while dipole polarization enhanced due to interactions between CNFs and Co/C. Capacitor-like structures will be formed due to the dielectric difference between components and so on generates great space-charge polarization. Enhanced in these parameters may be linked to increase in the magnetic and dielectric losses and increase the microwave absorption characteristic. Cobalt-based MOF/SrFe10CoTiO19/carbon nanofiber nanocomposite can be used as a potential candidate for microwave absorbers with strong absorption capability.

Magnetic Study of M-type Co-Ti Doped Strontium Hexaferrite Nanocrystalline Particles

The effects of Co-Ti ions substituting Fe3+ ions in strontium hexaferrite nanoparticles synthesized using ball-milling technique were investigated. X-ray diffraction patterns of SrFe12-2xCoxTixO19 (x = 0, 0.2, 0.4, 0.6, 0.8, and 1.0) demonstrated standard SrFe12O19 patterns with space group P63/mmc. The phase purity and the valence state of each ion were examined using X-ray photoelectron spectroscopy. The results indicated a Ti4+ valence state and a coexistence of 2 + and 3 + valence states for Fe and Co. An obvious irreversibility between the zero-field-cooled (ZFC) and field-cooled (FC) magnetization curves was observed below 300 K. The broad peaks in the ZFC curves were attributed to the movement of magnetic domains at temperature (TM). Magnetization hysteresis loops at discrete temperatures between 4 and 300 K showed a ferromagnetic behavior, with high coercive fields and large saturation magnetizations. The change of the saturation magnetization with increasing x revealed spin reorientation behavior at x ≥ 0.4 and remained relatively high for practical applications. The first anisotropy constant decreased with the increase of temperature. With Co-Ti substitution, it remained almost constant up to x = 0.4, and then decreased almost linearly at higher Co-Ti concentrations. Furthermore, the coercive field decreased with increasing x, reaching values suitable for high-density magnetic recording at 300 K in the substitution range 0.4 ≤ x ≤ 0.8.

Energy-efficient degradation of antibiotics in microbial electro-Fenton system catalysed by M-type strontium hexaferrite nanoparticles

The enormous use and poor controls of life-saving antibiotics disturb the natural microbiome either directly or indirectly. This study investigates the removal of three veterinary antibiotics i.e., tetracycline, tylosin and sulfaquinoxaline in a set of H-type microbial electro-Fenton (MEF) system catalyzed by a novel M-type strontium hexaferrite nanoparticles (SrM-NPs) as heterogeneous Fenton catalyst. The system has degraded 85.9–88.2% of 10 mg L−1 antibiotics in 17 h, and complete degradation occurred within 24 h having total organic carbon removal of 74.8–87.2%. Conversely, 20% lower degradation of antibiotics is attained using homogenous Fenton catalyst (i.e. FeSO4) in 24 h. Current generation has led to anodic chemical oxygen demand oxidation ranging from 67.0 ± 4.3%−72.5 ± 10.4% in concomitant with coulombic efficiency of 33–43% and maximum power output of 136.4 ± 3.1 mW m−2. Bacterial community analysis indicates that the dominant anodic bacteria belong to Proteobacteria (67.9 ± 0.5%). Being prominent electroactive bacteria, Geobacter is found to 2%, however other detected genera might have played their role in the current production. Present results designate MEF system, a promising approach in terms of effective antibiotics removal in concomitant with electricity generation.

Effect of Co and Sm Substitutions on the Magnetic Interactions of M-Type Strontium Hexaferrite Nanoparticles

In this contribution, we report the tuning of magnetic properties of Co- and Sm-substituted strontium hexaferrite nanoparticles. Stoichiometric and single-phase strontium hexaferrite (SrM) nanoparticles have been synthesised by sol–gel route using high-purity nitrates. The structural characterisation of synthesised samples was studied by X-ray diffraction studies. The experimental evidence indicates the crystallite size and morphology of nanoparticles. Hysteresis curves of Sr(1−x)SmxFe12O19 (x = 0.1, 0.2 and 0.3) show a significant increase of the coercivity of the samples, as compared with those of SrFe12−xCoxO19 (x = 0.1, 0.2 and 0.3), which depend on the effect of Fe2+ anisotropy on the 2a site in the Sm3+ ions. This effect if resulted in the large magneto crystalline anisotropy and coercive force. Important magnetic properties such as coercivity, remanence, saturation magnetisation, Bohr magneton and squareness ratio and exchange coupling can be tailored by controlling the grain size, composition and density of bulk magnetic materials. At nanometric length scales, the grain size plays an increasingly important role since magnetic domain behaviour and grain boundary concentration determine bulk magnetic behaviour. The temperature dependence magnetic behaviours of the samples were also discussed.

Silica coated hard-magnetic strontium hexaferrite nanoparticles

Stable colloids of hard magnetic particles are newly developed and very promising materials. Surface functionalization of these particles remains challenging because the particles tend to aggregate during reaction due to strong magnetic interactions. Herein we report on a synthesis of strontium hexaferrite hard magnetic nanoparticles coated with silica by hydrolysis of tetraethoxysilane. As a source of hexaferrite we used stable colloid of plate-like nanoparticles with mean diameter of 40 nm and thickness of 5 nm, which were prepared by a glass-ceramic process. We have shown that to successfully coat each hexaferrite particle individually the hydrolysis conditions should provide heterogeneous nucleation of silica with rate higher than the aggregation rate of the colloidal nanoparticles. The resulting materials represent single crystal hexaferrite cores wrapped in silica shell with mean thickness of 18 and 23 nm depending on synthesis conditions. The obtained core-shell particles can be easily dispersed as stable aqueous colloids. The materials can be used as magnetic sorbents or nanocontainers and, furthermore, they are very promising colloidal building blocks for various magnetically assembled nanostructures.

An investigation of structural and magnetic properties of Ce–Nd doped strontium hexaferrite nanoparticles as a microwave absorbent

Ce-Nd-substituted M-type strontium hexaferrite nanoparticles, Sr(CeNd)x/2Fe12-xO19 (SCNH)(x = 0, 0.5, 1, 1.5, 2) can be successfully synthesized using co-precipitation method. The synthesized nanocomposites are characterized by X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), Field emission scanning electron microscope (FESEM), vibrating sample magnetometer (VSM). The vector network analyzer (VNA) were used to analyze microwave absorption property. For comparison, the microwave absorption properties of the samples were measured by two simulation and metal back methods. The XRD and FT-IR analysis confirmed the existence of the M-type strontium hexaferrite phase in all samples. FESEM shows that the morphology of the particle in all of the samples was roughly hexagonal shape and they had uniform distribution. The VSM results indicated that increasing amounts of doped Ce3+ and Nd3+ reduced saturation magnetization (Ms) and coercivity (Hc). The minimum Hc for Sr (CeNd)x/2 Fe12-xO19 (SCNH) (x = 0, 0.5, 1, 1.5, 2) was 2700 Oe. The VNA results showed that by measuring the permittivity and permeability at 5 mm thickness and simulating the RL for <5 mm thicknesses the maximum RL would be obtained as −8.7 dB at d = 2.5 mm and f = 11 GHz in X = 2 sample. While using the metal back approach by direct measurement of RL from S11 at d = 2.5 mm thickness, results in maximum reflection loss of −37 dB at 9.62 GHz with 1.93 GHz bandwidth in X = 2 sample. This could be attributed to microstructural non-uniformities, which have not been taken into account in RL simulating method, while the direct calculation of RL at each specific thickness (by measuring the S11) yields more realistic results. Totally the results showed that Ce–Nd doped strontium hexaferrite nanoparticles are suitable candidates as microwave absorbers.

Properties and arsenic removal evaluation of polyvinyl alcohol nanofibers with embedded strontium hexaferrite nanoparticles

This work deals with the study of physical properties exhibited the polyvinyl alcohol (PVA) fabricated as a nanofiber composite with embedded strontium hexaferrite nanoparticles (SrM-NPs). The nanofibers obtained from electrospinning have 165 nm average diameter, and the nanoparticles obtained from the sol-gel Pechini method have 78 nm diameter. A low-frequency sonication treatment performed to these nanoparticles allowed to deagglomerate and to reduce their size up to obtain 3.4 nm average diameter. Also, the magnetic nanoparticles exhibit an arrangement along the PVA nanofiber because of the nanoparticles interact with the electric field generated during the electrospinning. This arrangement improves the magnetic properties of the composite in comparison with the bulk nanoparticles. Also, the interaction of strontium hexaferrite nanoparticles with the PVA matrix induces changes on its physical properties, as well as on the ability of nanofibers to uptake arsenic from water.

Reduction of electromagnetic pollution by the enhancement of microwave absorption of strontium hexaferrite functionalized poly(vinylidene fluoride) composite film

Strontium hexaferrite (SrH) nanoparticles were embedded in the matrix of PVDF by a simple and cost effective solution casting method to produce composite films suitable for the reduction of electromagnetic pollution. The influence of SrH nanoparticles on the structural, morphological, chemical, dielectric and microwave absorption properties of the SrH-PVDF composite films were also investigated in this report. X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM) and Fourier transform infrared (FTIR) spectroscopy measurements were conducted to understand the improvement of the electroactive β-phase of host PVDF due to the incorporation of SrH nanoparticles. Dielectric measurement of SrH-PVDF composite films in the GHz frequency range reveals that various polarization effects are present in the resultant composite films due to the formation of interfaces between the SrH nanoparticles and the PVDF matrix. High permeability of SrH nanoparticles and high permittivity of β-phase improved polar PVDF in SrH-PVDF composite films play the most significant role to get the effective interactions with electromagnetic waves. Also, SrH nanoparticles in the PVDF matrix introduces various dielectric and magnetic losses, which were appeared due to the presence of induced electric dipoles, magnetic hysteresis, domain-wall displacement, exchange resonance and eddy current losses. In the present report the microwave absorption of all the composite films was measured and for the first time −106.9 dB and −109.9 dB at ∼8.5 GHz microwave absorption were observed from these SrH-PVDF composite films. The overall improvement of the dielectric and magnetic responses of SrH-PVDF composite films make them the most potential candidate for the reduction of electromagnetic pollution from the device components operated in the field of microwave/GHz frequency range.