A deep insight into the electronic, structural, and magnetic properties of single-phase polycrystalline La2Ni1-xFexMnO6 double perovskites has been presented. X-ray photoelectron spectroscopy revealed that the Fe substitution resulted in a mixed-valence state for Ni and Mn in all samples. Rietveld analysis of the powder X-ray diffraction data suggested that all samples exhibited the orthorhombic structure

In this work, three samples were synthesized; SnO2 nanoparticles, ZnO nanorods and ZnO/SnO2 core–shell nanorods. The preparation of the ZnO/SnO2 composite included two steps, the first was to spin ZnO thin film as a seed layer. The second step is to grow ZnO/SnO2 to produce core–shell nanorod devices. The structure and morphology of the prepared samples were characterized by X-ray diffraction (XRD)

Compared to conventional electronic composites, polymer nanocomposites containing carbon nanotubes (CNT) have superior electrical properties. In the research, a highly efficient numerical method used to calculate the resistivity of the CNT/polymer composite is presented based on an integrated three-dimensional (3D) statistical resistor network model (RNM) which incorporates the tunneling effect between

In this study, to improve the properties of ZnO-based metal–semiconductor–metal (MSM) UV detectors, the surface of ZnO thin films prepared by the sol–gel method is initially doped with Zr sputtering at different time intervals. The amount of Zr at the surface and its effect on the crystalline structure and the surface morphology are, respectively, evaluated through energy-dispersive X-ray spectroscopy (EDX)

In this work, spinel zinc ferrite (ZnFe2O4), manganese oxide (Mn2O3) nanoparticles (NPs) as well as a series of ZnFe2O4/Mn2O3 nanocomposites (NCs) with varying Mn2O3 ratio from 10 to 50 wt. % were synthesized by co-precipitation route. The structural, optical, electrical, and magnetic properties of ZnFe2O4/Mn2O3 NCs were examined by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy

Pure sample Mg0.5Cu0.5Fe2O4 (MCF) and composition in chemical formula Mg0.5Cu0.5Mn0.4TixFe1.6-xO4 (0.0 ≤ x ≤ 0.6) were prepared by the solid-state reaction method. Structural analysis showed a single-phase spinel structure till x = 0.3. The average grain size was found in the range 71–141 nm. The lattice parameter of spinel structure depends on the complex interplay between ions size, and their distribution

Achieving excellent quality printing of graphene oxide is highly demanded in superior performance device fabrication. Laser-induced forward transfer (LIFT) is a promising method for printing low viscosity liquids, which alleviates the restrictions regarding the rheological properties and the size of the particles suspended in the printing ink. However, the investigation of GO printing is very limited

In the present report, optical and Raman spectral properties were extensively studied. Ni-doped CuO nanoparticles were prepared using the sol–gel method. X-ray diffraction patterns confirm that the prepared particles have the space group of C2h6 with monoclinic structure. Optical studies show that there is a broad absorption spectrum in the whole visible regime due to surface plasmon oscillations (SPR)

(FeCo)1−xCrx nanowires (NWs) were grown by a pulsed AC electrodeposition technique into aluminum oxide nanoporous templates with good consistency. The structural features and morphologies of the NWs array were examined by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). A vibrating sample magnetometer equipped with the first-order reversal curve (FORC) diagram was then

Multielement alloy doping is the feature of this paper, and disclosing the relationship between non-equilibrium microstructure and magnetic properties after rapid cooling is the key point. 3 wt% eutectic Al82.8Cu17Fe0.2 alloy was doped into SmCo5 alloy, followed by melt-spinning at 10–40 m/s. It is found all ribbons are composed of Sm(Co, M)5 and Sm2(Co, M)7 phases, but non-equilibrium solidification

A series of chemical sample with formulae Ni0.2Mg0.2Co0.6Fe2−xCrxO4 (0.00 ≤ x ≤ 0.1; step 0.025) were prepared by sol–gel automatic combustion at 950 °C. X-ray diffraction analysis found that the sample has characteristic peaks belonging to spinel, and Fourier transform infrared (FTIR) analysis found that the sample has a characteristic absorption band indicating the structure of spinel. This above

This work explores the possibility of oxytetracycline (OTC) elimination from water by using a magnetite grafted by carboxymethyl-beta-cyclodextrin adsorbent called Mag-CM-β-CD. They were characterized by fourier transform infrared spectroscopy and vibrating sample magnetometer. This article aims to perform a study on the effect of the pH synthesis process and pH OTC solution on the OTC removal, as

Femtosecond laser has been widely utilized for modification of crystal structure to achieve desired functions. So far, however, the effect of crystallographic orientation on the induced structure by femtosecond laser processing has yet been comprehensively studied. The present work is undertaken in an attempt to fill this gap in our knowledge. To this end, commercial-purity Si is used as a target material

Co-substituted hydroxyapatite (HAP) with cationic rubidium (Rb+) and anionic selenite (\({\text{SeO}}_{3}^{2 - }\)) was synthesized at different contributions of Rb+ ions. The chemical formula of the composition is [RbxCa(10–0.5x)(PO4)5(SeO3)(OH)2], where 0 ≤ x ≤ 0.8 with step 0.2. The structure and morphology of the as-prepared compositions were investigated upon the concentration of (Rb+) ions. It

Photocatalytic degradation efficiency largely depends on the oxidation capacity of semiconductors. Among various kinds of alternative semiconductors, BiPO4 has a strong photooxidation ability. However, the synthesis of BiPO4 or BiPO4-based composites always requires high temperature due to the unique structure of BiPO4. Herein, BiPO4/BiOCl heterojunction photocatalysts were successfully fabricated

We report our investigations on the magnetic, thermal, optical and dielectric properties of the nanocrystalline La0.7Sm0.3Cr1−xFexO3 (0 ≤ x ≤ 0.3) samples synthesized through sol–gel auto-combustion process. The maximum magnetization and coercive field increase in Fe-doped samples. Fourier transform infrared (FTIR) spectra reveal the metal–oxygen (Cr/Fe–O) stretching and bending modes of vibration

In this paper, an extensive investigation of low-frequency (1/f) noise and total ionizing dose–response of junctionless accumulation mode double-gate (JAM DG) MOSFET is presented. Current–voltage (Id–Vg) characteristics and low-frequency noise of JAM DG MOSFET are simulated at different ionized doses and compared to different gate oxide thickness and different channel doping concentrations. A significant

In this paper, we have reviewed laser technology and its applications in different areas. Overview of different kinds of lasers used for number of applications in real world have been presented. Moreover, this review paper covers technology advancement from the last decades along with providing a detailed transition from simple lasers to nano-sized lasers, also known as spasers, which are based on

This study aims to study the radiation shielding features of TeO2–WO3–RO systems (where RO =PbO and Bi2O3). The glasses were theoretically evaluated by using the simulation code Phy–X/PSD. Four TeO2–WO3–Bi2O3 glasses and three TeO2–WO3–PbO glasses were tested in this study. The linear attenuation coefficient (LAC), mass attenuation coefficient (MAC), effective atomic number (Zeff), half value layer

In this study, doped thin cadmium peroxide films were prepared by pulsed laser deposition with different doping concentrations of aluminium of 0.0, 0.1, 0.3, and 0.5 wt.% for CdO2(1-X)Al(X) and thicknesses in the range of 200 nm. XRD patterns suggest the presence of cubic CdO2 and the texture factor confirms that the (111) plane was the preferential growth plane, where the texture factor and the grain

The effects of Ag (0, 0.5, 1, and 2 wt%) content on the microstructure and mechanical properties of SLMed AZ61 Mg–Al–Zn alloy in the as-deposited and heat-treated conditions were investigated. The microstructure of SLMed AZ61 Mg–Al–Zn alloy is composed of α-Mg matrix and eutectic of α-Mg and Mg17Al12 phase at grain boundaries. The addition of Ag inhibited the growth of β-Mg17Al12 phase and further

Multiferroic nanocomposites with the chemical formula, (x).Bi0.95Mn0.05FeO3-(1-x). Ni0.5Zn0.5Fe2O4, (where x = 0.2, 0.4, 0.5, 0.6, and 0.8) have been synthesized using sol–gel autocombustion and conventional solid-state reaction methods. Resistivity and impedance measurements were taken in order to understand the properties of the conductivity of the samples. Multiple hopping mechanisms were evident

In search of low-cost, hysteresis-free, broad working temperature magnetocaloric materials, Ni2.24Mn0.76Sn Heusler alloy has been prepared by the conventional arc melting method. The XRD pattern reveals that the sample is crystallized in Fm \(\overline{3}\) m space group in L21 cubic symmetry. The Maxwell's equation is employed on magnetic isotherms to determine the change in magnetic entropy. This

The effects of AgO addition on the mechanical, optical, and radiation attenuation parameters of 46V2O5–46P2O5–xB2O3–yAgO glass system, namely VP-BxAy: (x,y) = (8,0), (6,2), (4,4), (2,6), and (0,8) mol%, was examined. Values of molar polarizability (αm, 19.397 × 10–24 to 18.820 × 10–24 cm3) were in direct relation with the molar refractivity (Rm, 48.882—47.427 cm3/mol), while the optical transmission

The challenges in the field of electrical conductive coatings have stimulated us to investigate the effects of atmospheric pressure plasma jet irradiation on a conductive film surface. We report the surface modifications of Cu-TiC thin film as a function of Ar plasma irradiation (up to 25 min). Cu-TiC thin film is synthesized by a modified sol–gel technique and deposited on quartz glass. A decrease

Non-stoichiometric ferrite magnetic nanoparticles Mg0.5+xLi1−2xFe2O4 (x = 0, 0.15, 0.35) were prepared using low-cost sol–gel method and annealed at temperature 700 °C. Thermal analysis measurement confirms that there is a decrease in weight with an increase in temperature which becomes thermally stable till 600 °C. The XRD study confirms that prepared nanoparticles are a cubic spinel structure having

The morphology and nanosize of cathode materials play a crucial role in the improved electrochemical properties of the electrode material for lithium ion batteries. Herein, we report the synthesis of a novel NH4V3O8 rectangular nanotube via a facile one-pot solvothermal protocol with the use of the mixing solvent containing glycerol, ethanol, and ethylene glycol. The morphology and nanosize evolution

The present work shows the comprehensive investigations of phase state, magnetic properties, magnetoresistive, and magnetocaloric effects of AlCrFeCoNiCu thin-film high-entropy alloy (HEA). Mosaic target with six segments has been used for tailoring the film composition. The results show that the magnetic and magnetoresistive properties of HEA thin films are significantly affected by the presence of

Temperature and frequency-dependent dielectric properties of 15% monovalent Li doped multiferroic GdMnO3 sample have been studied. A thermally activated relaxation with activation energy ~ 0.17 eV has been determined. An excellent fit of frequency dependent dielectric permittivity data with Curie-Von Schweidler’s function having n < 1 indicates that only Non-Debye relaxation is present in our sample

Bracket fungi such as Fomes fomentarius (“tinder fungus”), have strong, light and tough fruit bodies that make them interesting role-models for bio-inspired, biodegradable applications. So far, little is known about the relation between their microstructure and mechanical properties, information needed for designing novel composites. The fruit bodies (mycelia) of tinder fungus are hierarchically structured

Nanocrystalline NdFe1-xCoxO3 (0 ≤ x ≤ 0.4) samples have been synthesized by a sol–gel auto-combustion route. Rietveld refinement of x-ray diffraction patterns of the samples confirms the single-phase orthorhombic structure with space group Pbnm-\({D}_{2h}^{16}\). Williamson–Hall analysis is carried out to evaluate the average crystallite size and lattice strain. Raman scattering spectra indicate compressive

Al3+-doped ZnO micro–nanospheres (AZO MNSs) were obtained in the method of collochemistry at a low cost, and the effects of the concentration of Al3+ on morphology, structural and gas-sensitive properties of the AZO MNSs were investigated. It was found that Al3+ doping reduced the particle size distribution of the MNSs and, in addition, also significantly enhanced the gas sensitivity of sensors which

Increasingly popularity of electronic devices and wireless apparatus requires advanced materials to cope with severe electromagnetic wave pollution. Herein, magnetic EM wave shielding material, Ti3C2Tx/Fe3O4/aramid nanofibers composite paper, composed of low-dimensional Ti3C2Tx flakes and carboxylation Fe3O4 nanoparticles, was developed via vacuum-assisted filtration. At the meanwhile, uniform dispersion

In this work, the open-circuit voltage (Voc) of the dye-sensitized solar cells has been enhanced using a modified ruthenium dye. Two modified ruthenium dyes with formulas: Ru(bpy)2(bqdi) (PF6)2 (Ru-D1) and Ru(bpy)2(dmbqdi) (PF6)2 (Ru-D2) were prepared with chemical route. The FT-IR, structure, thermal and optical properties of the synthesized dye were investigated using a range of analytical techniques:

The advancement of p–n photodiode fabrication employing rare-earth materials has created cogent interest in the field of semiconductor device technology. We report on the formation of pure and Sn-doped CeO2 thin films assembled through spray pyrolysis technique to enhance the p-Si/n-Sn:CeO2 diode performance. A polycrystalline nature of cubical crystal structured Sn-CeO2 thin films was developed on

In this research work, nanocomposite coatings of nickel reinforced with graphene oxide (GOs) were produced by electrodeposition on steel substrate discs from the modified Watts bath. The resultant coatings were evaluated in terms of their surface morphology by atomic force microscopy and thermomechanical and electrochemical corrosion characteristics. The electrodeposited coatings showed variation in

Iron-doped nano CdS was prepared in air and underflow of nitrogen applying the thermolysis technique. The impact of air and nitrogen atmosphere on the crystallinity and the different structure parameters of the obtained samples was investigated using X-ray diffraction measurements and applying Rietveld method. Analysis revealed the presence of two phases for CdS; hexagonal wurtzite and cubic zincblende

The influence of the partial substitution of Fe by Si and thermal treatments on the structural, magnetic and magnetostrictive properties of the Fe67.5Pd30.5Si2 rapidly solidified ribbons has been investigated. A remarkable decrease in the martensite transformation temperature, with ~ 65 K lower than that of the Fe–Pd archetype alloy, is observed in the as-prepared ribbons. The thermal treatments shift

Ga0.9Al0.1FeO3 and Ga0.75Al0.25FeO3 samples were obtained using a solid-state reaction process. Phase analysis indicated that all samples are single phase having an orthorhombic structure. The effect of Al doping on the lattice parameters, the distortions in the tetrahedral and octahedral bond lengths and angles and cation distribution of different ions among the four crystallographic positions in

The detection of water pollutants employing organic field-effect transistor (OFET) sensor requires a stable performance in an aqueous media. It is an essential condition of any sensor to present reliable measurements. Some organic-conducting polymers deteriorate almost immediately in the presence of an aqueous medium. However, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has

Structural and magnetic properties of as-prepared and annealed MgFe2O4 nano-powders prepared by auto-combustion method using dl-alanine fuel have been investigated. Nanoparticles with single-crystal electron diffraction patterns are analyzed, and phase purity is confirmed by X-ray diffraction and Raman and infrared spectroscopy. Residual carbon (C), hydrogen (H) and nitrogen (N) content in as-prepared powders

In this study, the authors emphasized an incisive purpose as the valorization of waste soda–lime–silicate glass (SLS) for a potential gamma-rays shielding material. For this, xTa2O5-(100-x)SLS glass systems where x: 0, 0.005, 0.05, and 0.5 wt% were fabricated via conventional melting technique. The synthesized four glass specimens (RG and RGT1 to RGT3) were then subjected to physical, optical, and

Easy control of electronic and optical properties of ZnO is pivotal for its various optoelectronic applications. The present manuscript illustrates preparation of flower- and needle-like microstructures of ZnO by simple hydrothermal technique using Zn(NO3)2 and NaOH as precursors. The method is found to be suitable to generate different ZnO microstructures just by changing NaOH concentration. Other

The effects of substrate temperature on the structural, morphological and luminescent properties of YVO4:Eu3+ phosphor thin films were investigated using X-ray diffraction, field emission scanning electron microscopy, photoluminescence spectrometry and ultraviolet–visible spectrophotometry. YVO4:Eu3+ thin films were grown on glass substrates using a radio-frequency magnetron sputtering technique at

In this study, a non-enzymatic glucose sensor is proposed which offers a simple approach for glucose detection with a considerable sensitivity and cost-effectivity. In this regard, an electrodeposited Cu2O/ITO electrode as electrochemical sensor and its analytical performances evaluation for glucose detection in alkaline medium are performed. The as-prepared Cu2O/ITO sample has been characterized using

The present work aims to study the photocatalytic and the anticorrosion properties of CeO2-nanotubes (CeNTs) and CeNTs decorated by plasmonic nanoparticles (Au, Ag and Pt). CeNTs were obtained by a hydrothermal method, while the deposition precipitation using the urea method was chosen for the CeNTs metallization. The materials characteristics were performed using UV–Visible in Reflection Diffuse spectroscopy

Pure monoclinic P21/c VO2 thermochromic ceramics are fabricated based on an accessible and simple method using thermal decomposition synthesis in an organic medium. Well-developed submicron crystals with different morphologies are obtained when calcination temperature is varied from 500 to 700 °C. XRD shows that calcination temperature is necessary to form the monoclinic thermochromic phase and to

Effects of selective carbon (C) incorporation in silicon (Si) quasi-read-avalanche-transit-time (QRATT) devices are studied through indigenously developed non-linear Strain-corrected-mixed-quantum-tunneling-drift–diffusion-model (SMQTDDM). A superlattice with alternate thin films of strained-Si and comparatively thick layers of Si0.99C0.01 stressors constitutes the active region. Out-of-plane mobility

Hard carbon is difficult to prepare as high-crystallinity synthetic graphite even with graphitization (over 2400 °C), so only soft carbon has been used as a raw material for the preparation of synthetic graphite. Therefore, the selection of raw materials for synthetic graphite preparation is limited. In this study, synthetic graphite was prepared from hard carbon-based carbon black (HCCB) to overcome

Sulfur dioxide (SO2) is prominent as hazardous gas owing to its unpropitious effects on the ecosystem. In this report, a flexible SO2 gas sensor is reported by solvothermally synthesized crystalline nickel(II)benzenetricarboxylate metal–organic framework (Ni-MOF) modified with hydroxyl group (–OH) activated single wall carbon nanotubes (SWNTs) and multi-walled carbon nanotubes (MWNTs), respectively

In this paper, black silicon (Si) and silver (Ag) surface plasmons were used to improve the electroluminescence (EL) intensity of silicon nanocrystals (Si-nc), and the mechanism of black Si and Ag nanoparticles enhancing the EL of Si-nc LED is analyzed. The Ag nanoparticles are introduced into Si-nc LED to generate surface plasmons. The surface plasmons radiate the local electromagnetic field, which

Undoped and BaZrO3 nanopowder-doped MgB2/Nb/Cu single filament wires were prepared by modified internal magnesium diffusion (IMD) process using 0, 2 and 5 wt% BaZrO3 addition in amorphous B powder. Superconducting MgB2 phase was formed during heat treatment at temperatures from 650 to 670 °C. The wire microstructure was analysed using XRD, SEM, TEM and EDS to study BaZrO3 dopant interaction with Mg

The direct flexoelectricity in solid dielectrics, as an electromechanical mechanism coupling polarization and strain gradient, exhibits strong size dependence and structures associated (geometry or microstructure). In this work, a novel asymmetric micro-cylinder composed of functionally graded (FG) materials is designed to evaluate computationally the role of flexoelectricity in the electromechanical

In this work, PDC SiOC porous structures were fabricated using the stereolithography (SLA) 3D printing method with preceramic resin methylsiloxane. The printed structures were then sintered at 1000 °C for 1 h. Water treatment can help prevent the shrinkage and remove the unreacted resin. From the XRD and FT-IR results, the sintered ceramic is amorphous SiOC. The microstructures show that the printed

(1−x)[0.94Bi0.5Na0.5TiO3 – 0.06BaTiO3]−xLa0.33NbO3 (x = 0, 0.02, 0.04, 0.06, 0.08, 0.10) (BNBT-LN) bulk lead-free relaxor ferroelectric ceramics were synthesized via solid-state sintering method. Phase, microstructure and energy storage properties were determined. The X-ray diffraction (XRD) revealed a single perovskite phase for compositions of x ≤ 0.02, while the second phase of Bi2Ti2O7 along with

Magnetorheological fluids have a viscosity which can be controlled by the application of magnetic field. Usually they have dispersions of magnetic particles with size micrometric in a carrier liquid. After purification process, extracted material from mining waste allowed us to obtain the magnetite that was used as the magnetic component of a magnetorheological fluid. The carrier continuous medium