Properties Of Zinc Ferrite Nanoparticles Research Articles

Correction to Effect of Chitosan on the Microstructural Properties of Zinc Ferrite Nanoparticles

Correction to Effect of Chitosan on the Microstructural Properties of Zinc Ferrite Nanoparticles

X-ray/gamma radiation shielding properties of zinc ferrite nanoparticles synthesised via solution combustion method.

Zinc ferrite (ZnFe2O4) nanoparticles were synthesised via solution combustion method using urea as a fuel. The synthesised samples were characterised with various techniques. The cubic structure with Fd-3m space group is confirmed by Powder X-ray Diffraction and Bragg's reflection. The crystallite size estimated from Scherrer's method was found to be 40nm. The agglomerated irregular shape and sized surface morphology was confirmed by Scanning Electron Microscopy image. The direct energy band gap determined from Wood and Tauc's relation was found to be 5.25eV. Using a NaI (Tl) detector and multi-channel analyser, the described sample was examined for X-ray and gamma ray shielding characteristics in the energy range of 0.081-1.332MeV. The measured shielding values are in good agreement with the theory, however below 356keV, there is a little variation of up to 10%. The current work offers up new possibilities for using this simple, affordable, effective and low temperature approach to create nanomaterials for X-ray and gamma ray shielding.

Synthesis of zinc ferrite nanoparticles and evaluation of their antifungal properties at different temperatures

Zinc ferrite nanoparticles have been synthesized by the co-precipitation method where Polyethylene Glycol act as the capping agent. The sample structure and morphology of the product were analysed by powder XRD, FTIR, U-V visible spectroscopy and scanning electron microscope (FE-SEM). The prepared NPs were annealed at varying temperatures such as 500℃, 600℃ and 700℃. The XRD data confirms the presence of nanosized ZnFeO particles and the X-ray density of the sample and their particle size increases linearly along with the increase in annealing temperature, but the lattice parameter changes inversely. The FTIR data also provide information about nanosized zinc ferrite particles. The surface characteristics of ZnFeO were observed by FESEM. The anti-fungal properties of zinc ferrite nanoparticles were also evaluated.

Optical Properties of Zinc Ferrite Nanoparticles Embedded in Zinc Oxide Thin Films Investigated by STEM, EELS and CL

Optical Properties of Zinc Ferrite Nanoparticles Embedded in Zinc Oxide Thin Films Investigated by STEM, EELS and CL

Investigation of the Structural and Optical Properties of Zinc Ferrite Nanoparticles Synthesized via a Green Route.

We report herein the synthesis of ZnFe2O4 (ZF) nanoparticles via a simple and eco-friendly green route using lemon juice as a reducing agent and fuel. The effect of different calcination temperatures on the particle size and bandgap of grown ZF nanoparticles was investigated. The structural, morphological and optical properties of the synthesized nanoparticles were evaluated using synchrotron x-ray diffraction (S-XRD), field emission scanning electron microscopy (FE-SEM) and UV-visible diffuse reflectance spectroscopy (UV-Vis-DRS), respectively. S-XRD confirmed a spinel F-d3m phase in all four samples calcined at 350°C, 550°C, 750°C and 1000°C. The crystallite size calculated from the Debye–Scherrer equation showed an increase from 14 nm to 20 nm with the increase in calcination temperature. Williamson–Hall (W-H) analysis revealed an increase in the particle size from 16 nm to 21 nm and a decrease in the lattice microstrain from 0.913 × 10−3 to 0.154 × 10−4 with the increase in calcination temperature. The optical bandgap of the ZF nanoparticles obtained from UV-Vis-DRS decreased from 2.265 eV to 2.225 eV with the increase in calcination temperature. The ZF nanoparticles with tunable particle size, lattice microstrain and optical bandgap have potential application in ferrofluid, electromagnetic shielding, photocatalysis, hyperthermia, dye degradation and other areas.Supplementary InformationThe online version contains supplementary material available at 10.1007/s11664-022-09813-2.

Effect of manganese doping on the structural, mechanical, optical, and magnetic properties of zinc ferrite nanoparticles

The effects of manganese doping on the structural, mechanical, optical, and magnetic properties of zinc ferrite nanoparticles ( x = 0.00, 0.03, 0.06, 0.10) are reported. The variation in lattice parameters, average crystallite sizes, and the cation distribution of the mixed-spinel NPs were noticed. The spherical morphologies and particle sizes were observed using scanning electron microscopy (SEM), and the elemental composition was found using energy dispersive x-ray (EDX) spectroscopy. The FT-IR spectra showed significant absorption bands, and the values of Debye temperature (θ D) increased with the doping of Mn2+ content and an increase in the lattice vibrations. UV-visible diffuse reflectance spectroscopy (DRS) was used to find the optical energy bandgap values from 1.87 to 1.98 eV. The magnetic properties were evaluated using a vibrating sample magnetometer (VSM). Significant variations between the experimental and theoretical magnetic moments were observed, suggesting that the present system showed Yafet-Kittel type magnetic ordering.

Enhancement on the electrical and optical behaviour of ZnFe2O4 nano particles via transition metal substitution

The present study aimed to investigate the behavior of nano Zinc Ferrite particles by copper substitution in various concentrations in order to fabricate novel material for future use in optoelectronic and electromagnetic shielding devices. To that end, Nano crystalline Zn-Cu ferrites (Cu(1-X)ZnXFe2O4: x = 0, x = 0.25, x = 0.5, x = 0.75 and x = 1) were prepared using combustion technique with egg white as a fuel. The prepared powder samples were investigated by various characterization methods such as X-ray diffraction analysis (XRD), High resolution scanning electron microscope analysis (HRSEM), UV–Vis- DRS spectra and electrical analysis. The physical investigations of the final product revealed that the lattice structure of Cusubstituted at Znsites developed the spinel ferrite particles with single crystalline phase at room temperature (RT), with morphological, optical and temperature dependent electric properties. Substitution of transition metals has a significant impact on the microstructure, crystal structure, electrical parameters and optical properties of zinc ferrite nanoparticles, according to the findings. Furthermore, the dielectric constant (εr) and dielectric loss (tanδ) are investigated and found to be strongly dependent on frequency and temperature. Enhancements of electrical resistivity of mixed ferrites suggest the use of these ferrites in EM shielding devices.

Effect of heating temperature on structural and magnetic properties of zinc ferrite nanoparticles synthesized for the first time in presence of Moroccan reagents

In this study, nanoparticles of ZnFe2O4 were prepared at low temperatures by the coprecipitation method and for the first time using non-standard Moroccan reagents. The formation of Zinc Ferrite was confirmed by structural characterization techniques XRD and FTIR. From XRD data, the pure ZnFe2O4 phase was obtained at low temperatures (400 and 500 °C), with a cubic spinel structure (space group Fd3m). In addition, from Rietveld analysis the coordinates of the atomic positions of the Fe and Zn atoms remain the same in all pure samples. The cationic distribution estimated in this work reveals that the ZnFe2O4 synthetized has become mixed spinel where Zn2+ and Fe3+ cations are distributed in both crystallographic sites. Analysis of FTIR spectra showed two absorption bands characteristic of Tetrahedral (Td) and Octahedral (Oh) sites observed in spinel structure. The morphological study by TEM images indicates that most of the nanoparticles have a uniform shape and the average nanoparticle size is 16 nm. The magnetic properties of the nanoparticles were studied using MPMS, these magnetic measurements illustrate a superparamagnetic and ferrimagnetic behavior of zinc ferrite at 300 K and 5 K, respectively. The normal spinel zinc ferrite was subjected to a DFT study to investigate its most probable magnetic ground state and its corresponding electronic structure using the GGA and GGA + U methods.

Impact of Co2+ substitution on microstructural evolution and magnetic properties of zinc ferrite nanoparticles synthesized by precipitation and hydrothermal-joint method

Impact of Co²⁺ substitution on microstructural evolution and magnetic properties of zinc ferrite nanoparticles synthesized by precipitation and hydrothermal-joint method

New nanosized (Gd3+, Sm3+) co-doped zinc ferrite: Structural, magnetic and first-principles study

ZnFe2-x-yGdxSmyO4 (x = y = 0.01) ferrite nanoparticles with average size of 5 nm are synthesized by the co-precipitation method for the first time. X-Ray Diffractometer (XRD) revealed the formation of single-phase spinel with a high crystallinity. Fourier Transform Infrared (FTIR) confirmed the formation of spinel matrix crystallographic sites and Transmission Electron Microscopy (TEM) confirmed the formation of agglomerated spherical particles with nanometric sizes. The analysis of magnetic properties indicates a week ferrimagnetic behavior at low temperatures, while a superparamagnetic behavior is observed at high temperatures. The blocking temperature value is 55 K. A DFT study was performed on the normal, mixed and Sm–Gd co-doped spinel zinc ferrite using the GGA + U method to evaluate their ground state magnetic spin configuration and the effect of Sm3+ and Gd3+ doping on the structural, magnetic and electronic properties of zinc ferrite nanoparticles. It is found that the nanomaterial is most likely to adopt a ferrimagnetic spin arrangement with a degree of inversion close to 0.5. These results suggest that this material has significant function in the industry, which could be beneficial in point of view for telecommunication applications.

Biogenic synthesis enhanced structural, morphological, magnetic and optical properties of zinc ferrite nanoparticles for moderate hyperthermia applications

A biogenic protocol has been adopted for the formulation of zinc ferrite nanoparticles (ZFNPs) using an aqueous extract of Allium cepa (AC) as a reducing agent for the optimization of its properties. The various characterization results from XRD, SEM, DRS, Raman, and VSM clearly showed that the formulated ZFNP was a single phase with crystallite size in the range of 11–15 nm. A spherical morphology was observed for all the samples with particle size in the range of 34–52 nm. All the samples showed a superparamagnetic behavior with reduced saturation magnetization. The ZFNPs prepared were used for self-heating analysis in hyperthermia applications at 180 Oe applied field and 425 Hz. It produced enough heating within the therapeutic temperature to attain the Curie temperature. The ZFNP formulated is auspicious for hyperthermia applications with less side effect owing to their biocompatibility, moderate Curie temperature, and SAR value within the therapeutic range. The formulated nanoparticles have further broadened the horizon of hyperthermia therapeutic applications with an innocuous protocol within 300 s.

Electrochemical and Magnetic Properties of Zinc Ferrite Nanoparticles through Chemical Co-Precipitation Method

Abstract Nano sized ZnFe2O4 particles have effectively synthesized via chemical co-precipitation method. The synthesized ZnFe2O4 nanoparticles were characterized by using TG/DTA, XRD, FTIR, FETEM, VSM, and CV. The synthesized products (as-synthesized) were characterized using thermo gravimetric and differential thermal analysis (TG/DTA). TG curve indicate that the thermal stable phases which are attributed no weight losses occur beyond 450-900°C and the corresponding DTA graph indicate two exothermic peaks 290°C and 440°C was predicted and it was formed of the prepared ZnFe2O4 particles. X-ray diffractogram of annealed products clearly classify that the structure of single-phase nano estimated zinc ferrite structure. In accounts the crystallite size, X-ray density and lattice parameter of the measured values are tabulated. FETEM analysis revealed the spherical nature with finely dispersed in the prepared samples. M-H estimation affirms the excessively superparamagnetism conduct which was watched. CV investigation shows, upgraded explicit capacitance estimation of 212 Fg−1 was estimated in the lower filter rate. These materials suggested for super capacitor application.

A Comparative Study of the Properties of Zinc Ferrite Nanoparticles Synthesized by Different Techniques for Nanofluid Preparation

Zinc ferrite nanoparticles have been synthesized using sol-gel and co-precipitation method. The XRD studies confirm the formation of single-phase spinel structure. The UV–visible analysis shows maximum absorption in the range of 351–398 nm. The room temperature frequency dispersion of dielectric constant, initial permeability and their corresponding loss in the range 100 Hz–1 MHz has been studied. The variation of coercivity with particle size indicates the change in domain nature from single domain to multi-domain with annealing. The as-prepared co-precipitated sample forms a more stable nanofluid indicating the suitability of co-precipitation method for nanofluid preparation.

Effect of slow charged 90 keV Ne8+ ions on zinc ferrite nanoparticles

The present work reports on the effect of slow charged ions irradiation on the structural and magnetic properties of zinc ferrite nanoparticles obtained by coprecipitation method. Results from both the x-ray and Fourier Transform Infrared Spectroscopies confirm the formation of the spinel phase. The structural investigation using x-rays reveals no significant impurity peak and a crystallite size of 9 nm. Particle size of pristine sample is determined to be around 9 nm. Crystallinity and magnetic properties of ferrite sample investigated before and after irradiation process show that electronic excitations inside the material alter the magnetic parameters. Mössbauer Spectroscopy measurements indicate that a fluence of 3*1014 ions cm−2 Ne8+ ions of 90 keV are sufficient to induce cation redistribution into zinc ferrite nanoparticles.

Influence of PVA, PVP and PEG doping on the optical, structural, morphological and magnetic properties of zinc ferrite nanoparticles produced by thermal method

This work demonstrated an in-depth investigation of the effect of surface doping by three different polymers on the synthesis of zinc ferrite nanostructures by a thermal method. The zinc ferrites were doped with 20% concentration by mass of Polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP) and Polyethylene glycol (PEG) to enhance its properties. The X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM) confirmed the incorporation of the polymers in the lattice with an obvious increase in the crystallite size, functional groups, spherical morphology, and superparamagnetic behavior respectively. It is noteworthy that the cubic crystalline structure, favorable particle size and magnetic properties of the doped samples gave the NPs a controllable and improved properties for sundry applications in the medical fields such as Hyperthermia and drug delivery with PEG dopant showing a towering leverage on the properties of the ZF with 11% polydispersity Index (PDI).

Properties of Zinc Ferrite Nanoparticles Due to PVP Mediation and Annealing at 500°C

In contributing to the improvement of Ferrite Magnetic nanoparticles, the effects of Poly (Vinyl Pyrrolidone) (PVP) and annealing on the structural and magnetic properties of Zinc ferrite nanoparticles (ZFNPs) synthesis were investigated in this work. The effects were evaluated using the X-ray diffraction (XRD) spectroscopy, Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and Vi-brating sample magnetometer (VSM). The XRD analysis confirms a good formation of the inverse spinel crystal structure with an average particle size of 1.3 nm to 15.2 nm and from 1.6 nm to 21.1 nm for the ZFNPs as-prepared and PVP mediated ZFNPs for the un-annealed and annealed samples, respectively. The SEM image reveals an increase in the particle size for both the as-prepared and PVP mediated samples after annealing at 500°C. The FTIR also reveals the inverse spinel structure for the as-prepared and annealed samples, which witnesses a vibrational red shift towards a higher wave number for the annealed samples. The VSM analysis indicates the superparamagnetic behavior of PVP mediated and annealed sample with zero remanence magnetization (Mr) and Coercivity (Hc). The saturation magnetization (Ms) increases from 1.31 emu/g, for the as-prepared samples, to 4.31 emu/g after the annealing and from 1.18 emu/g, for the PVP mediated, to 6.38 emu/g after annealing. These effects have been attributed to the cationic re-arrangement on the lattice site after the annealing. This presents a superior material for various applications in nanotechnology.

Determination of ferromagnetic, superparamagnetic and paramagnetic components of magnetization and the effect of magnesium substitution on structural, magnetic and hyperfine properties of zinc ferrite nanoparticles

Abstract MgxZn1−xFe2O4 nanoparticles (x = 0.0, 0.2, 0.4, 0.5, 0.6, 0.8 and 1.0) were synthesized by auto combustion method. Structural refinement of the samples using Rietveld method revealed cubic spinel structure and showed migration of Fe3+ ions from octahedral to tetrahedral site with increase in magnesium concentration. TEM analysis showed that Mg doping has no significant influence on average particle size of the samples. The FTIR confirmed spinel structure and shift of ʋ1 and ʋ2 bands with magnesium concentration corroborated cation migration obtained from Rietveld analysis. The simultaneous presence of doublet and collapsed sextet in the Mossbauer spectra is attributed to superparamagnetic or paramagnetic and ferromagnetic particles respectively. The strength of the collapsed sextet increased with the magnesium concentration owing to the enhancement of A-B superexchange interaction. Saturation magnetization is found to be varied with magnesium concentration in accordance with Yafet-Kittel model. The superparamagnetic, ferromagnetic and paramagnetic phases in each sample were resolved by curve fitting the experimental M−H curves which confirm findings of our Mossbauer results. Also the contribution of these phases to saturation magnetization was estimated and the coexistence of different magnetic phases is attributed to distribution of particle size.

Effect of cobalt substitution on structural, elastic, magnetic and optical properties of zinc ferrite nanoparticles

The aim of this study is to investigate in-depth the effect of Co2+ ions doping on ZnFe2O4 nanoparticles in term of morphology, magnetic and optical properties. Zn1-xCoxFe2O4 (x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5) powders were prepared by co-precipitation method. X-ray diffraction (XRD) and Energy Dispersive Spectroscopy (EDS) confirmed the incorporation of Co2+ ions within ZnFe2O4 host lattice, and an increase of the crystallite size from 37 to 51 nm in agreement with TEM analysis. FTIR revealed a slight change in two main bands υ1 and υ2 in the frequency range of 400–4000 cm−1, which caused by stretching vibrations at the A- and B-sites respectively. The elastic moduli such as stiffness constant, Young's modulus, rigidity modulus, bulk modulus, Poisson's ratio, wave velocity and Debye temperature have been calculated using FTIR data. VSM showed transformation of magnetic behavior from paramagnetic to ferromagnetic as a result of Co2+ ions doping. With higher Co2+ (x = 0.2 to x = 0.5) content, the saturation magnetization (Ms) increased rapidly from 5.7 emu/g to 82 emu/g respectively. The remanance magnetization (Mr) and coercivity (Hc) were influenced by Co2+ content too and this was mainly related to the change in crystallite size. The optical band gap (Eg) of Co-Zn ferrite samples was determined by means of diffuse reflectance spectra. The optical band gap value estimated from Tauc plots was found to decrease from 1.89 to 1.31 eV with increasing Co2+ content.

The effects of synthesis conditions on the magnetic properties of zinc ferrite spinel nanoparticles

Zinc ferrite nanocrystals were synthesized from metal chloride precursors via chemical co-precipitation method, using different synthesis conditions. Characterization measurements including X-ray diffraction (XRD), transmission electron microscopy (TEM) and super conductiong quantum device (SQUID) were used to study the influence of precursor's concentration and reaction time on the crystalline structure, average sizes and magnetic properties of zinc ferrite nanoparticles. The transmission images show spherical, homogenous shape and particle size ranging from 16 to 22 nm. DC magnetization (2-300 K) measurements reveal a superparamagnetic behavior for the ZnFe2O4 samples with a blocking temperature in the range of 18-24 K. Our results demonstrate that magnetic properties of magnetic particles can be largely modified by just changing the reaction condition such as concentration and reaction time, which might be a useful way to design novel magnetic materials.

Study of Physical and Magnetic Properties of Zinc Ferrite Nanoparticles

Study of Physical and Magnetic Properties of Zinc Ferrite Nanoparticles