Large-scale superconductor applications necessitate a superconducting matrix with pinning sites (PSs) that immobilize vortices at elevated temperatures and magnetic fields. While previous works focused on the single addition of nanoparticles, the simultaneous inclusion of different nanoparticles into a superconducting matrix can be an effective way to achieve an improved flux pinning capacity. The purpose of this study is to explore the influence of mixed-nanoparticle pinning, with the co-addition of non-magnetic (BaTiO; BT) and various types of magnetic spinel ferrite (MFeO, abbreviated as MFO, where M = Mn, Co, Cu, Zn, and Ni) nanoparticles, on the superconductivity and flux pinning performances of the high-temperature superconductor YBaCuO (YBCO).
View Article and Find Full Text PDFThe composition and hyperfine structures of Nd-Ho ions cosubstituted CoNi nanospinel ferrites (CoNiNdHoFeO ( ≤ 0.05) NSFs) as well as their magnetic and electrodynamic behavior have been presented. The compound Nd-Ho → CoNiFeO ( ≤ 0.
View Article and Find Full Text PDFObjective: The aim is to coat orthodontic brackets with two different bioactive materials and to compare the mechanical and morphological properties of coated brackets and tooth surfaces.
Materials And Methods: A total of 120 stainless steel brackets were divided equally into three groups, that is, the uncoated brackets and nanohydroxyapatite (nHA)-coated, and nanobioactive glass (nBG)-coated brackets using a spin coater machine. The brackets were bonded on the enamel surface and underwent remineralization/demineralization cycles for days 1, 7, 14, and 30.
Spectrochim Acta A Mol Biomol Spectrosc
November 2024
Water pollution caused by dyes and industrial wastewater poses a significant threat to ecosystems. The purification of such pollutants presents a major challenge. Photocatalysis based on semiconductor materials is a potential wastewater treatment process due to its safety and cost-effectiveness.
View Article and Find Full Text PDFThis study aims to examine the effect of foliar magnetic iron oxide (FeO) nanoparticles (IONP) application on the physiology, photosynthetic parameters, magnetic character, and mineral element distribution of cherry tomatoes (Solanum lycopersicum var. cerasiforme). The IONP suspension (500 mg L) was sprayed once (S1), twice (S2), thrice (S3), and four times (S4) a week on seedlings.
View Article and Find Full Text PDFStruts of a superconducting YBaCuO (YBCO) foam prepared by the infiltration growth method on the base of commercial polyurethane foams were extracted from the bulk, and thoroughly characterized concerning the microstructure and the magnetoresistance, measured by the four-point technique. Optical microscopy, electron microscopy, electron backscatter diffraction and atomic force microscopy observations indicate a unique microstructure of the foam struts which shows a large amount of tiny YBaCuO (Y-211) particles (with diameters between 50 and 100 nm) being enclosed in channel-like grain boundaries between the YBCO grains and a one-of-a-kind surface of the struts covered with BaCuO-particles. The resistance data obtained at temperatures in the range 4.
View Article and Find Full Text PDFRoot-to-shoot translocation of nanoparticles (NPs) is a matter of interest due to their possible unprecedented effects on biota. Properties of NPs, such as structure, surface charge or coating, and size, determine their uptake by cells. This study investigates the size effect of iron oxide (FeO) NPs on plant uptake, translocation, and physiology.
View Article and Find Full Text PDFNanotherapeutics have attracted tremendous research interest in the modern pharmaceutical and biomedical industries due to their potential for drug development, targeted delivery, and therapeutic applications. Therefore, the current study underpins the synthesis of praseodymium ion (Pr)-substituted NiCoFeO nano-spinel ferrites, (CoNiPrFeO (0.0 ≤ x ≤ 0.
View Article and Find Full Text PDFZinc oxide nanoparticles (ZnO NPs) are a promising platform for their use in biomedical research, especially given their anticancer and antimicrobial activities. This work presents the synthesis of ZnO NPs doped with different amounts of rare-earth ions of ytterbium (Yb) and cerium (Ce) and the assessment of their anticancer and antimicrobial activities. The structural investigations indicated a hexagonal wurtzite structure for all prepared NPs.
View Article and Find Full Text PDFThe soft/soft (CoFeO) : (NiCuZnFeO) (CFO /NCZO ) nanocomposites (NCs) based on spinel ferrites were produced by the sol-gel method with varying phase's ratio ( : = 0 : 1; 1 : 1; 2 : 1; 3 : 1; 1 : 3; 1 : 2 and 1 : 0). All NCs consisted of 2 single phases (initial spinels) without any impurities and the absence of chemical interaction between phases. Structural features were investigated and analyzed.
View Article and Find Full Text PDFCo-Ni ferrite is one of the crucial materials for the electronic industry. A partial substitution with a rare-earth metal brings about modification in crystal lattice and broadens knowledge in the discovery of new magnetic material. Current work reports a Ga substitution in the Co-Ni ferrite with composition CoNiFeGaO (where x = 0.
View Article and Find Full Text PDFIn the present work, different nanoparticles spinel ferrite series (MFeO, CoMFeO; M = Co, Mn, Ni, Mg, Cu, or Zn) have been obtained via sonochemical approach. Then, sol-gel method was employed to design core-shell magnetoelectric nanocomposites by coating these nanoparticles with BaTiO (BTO). The structure and morphology of the prepared samples were examined by X-ray powder diffraction (XRD), scanning electron microscope (SEM) coupled with energy dispersive X-ray spectroscopy (EDX), high-resolution transmission electron microscope (HR-TEM), and zeta potential.
View Article and Find Full Text PDFIn this study, we investigated a comparison of the structure, morphology, optic, and magnetic (room temperature (RT)) features of Er and Sm codoped CoFeO (CoErSm) nanospinel ferrite (NSFs) ( ≤ 0.05) synthesized via hydrothermal (H-CoErSm NSFs) and sonochemical (S-CoErSm NSFs) approaches. The formation of all products via both synthesis methods has been validated by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM), along with energy-dispersive X-ray (EDX) and transmission electron microscopy (TEM) techniques.
View Article and Find Full Text PDFThe influences of the sintering process and AgNO addition on the phase formation and radiation shielding characteristics of BiPbSrCaCuO were studied. Three ceramics (code: C0, C1, and C2) were prepared as follows: C0 was obtained after calcination and only one sintering step, C1 was obtained after calcination and two sintering cycles, and C2 was prepared after the addition of AgNO at the beginning of the final sintering stage. C2 displayed the maximum volume fraction of the Bi-2223 phase (76.
View Article and Find Full Text PDFIn this study, the samples of the ZnFeO (ZFO) spinel ferrites nanoparticles (SFNPs), CoNiGaGdFeO (CNGaGdFO) SFNPs and (CoNiGaGdFeO)/(ZnFeO) (: = 1:1, 1:2, 1:3, 2:1, 3:1 and 4:1) (CNGaGdFO)/(ZFO) spinel ferrite nanocomposites (NC) have been synthesized by both sol-gel and Green pulsed laser ablation in liquid (PLAL) approaches. All products were characterized by X-ray powder diffraction (XRD), scanning and transmission electron microscopies (SEM and TEM), elemental mappings and energy dispersive X-ray spectroscopy (EDX). It was objected to tune the magnetic properties of a soft spinel ferrite material with a softer one by mixing them with different fractions.
View Article and Find Full Text PDFThe effect of Er and Y ion-co-substituted MnZnEr Y Fe O (MZErYF) ( ≤ 0.10) spinel nanoferrites (SNFs) prepared by a sonochemical approach was investigated. Surface and phase analyses were carried out using SEM, TEM, and XRD.
View Article and Find Full Text PDFThe increasing demand for food in the world has made sustainable agriculture practices even more important. Nanotechnology applications in many areas have also been used in sustainable agriculture in recent years for the purposes to improve plant yield, pest control, etc. However, ecotoxicology and environmental safety of nanoparticles must be evaluated before large-scale applications.
View Article and Find Full Text PDFThe current study offers an efficient design of novel nanoparticle microspheres (MCs) using a hydrothermal approach. The CoNiGaFeO (0.0 ≤ x ≤ 1.
View Article and Find Full Text PDFArtif Cells Nanomed Biotechnol
December 2021
Combining two or more nanoparticles is a promising approach. Previously we have reported synthesis of nanoparticles Dysprosium (Dy) substituted with manganese (Mn) zinc (Zn) by using ultrasonication method. The five different nanoparticles (NPs) MnZnDyFeO ( ≤ 0.
View Article and Find Full Text PDFIn the present study, biocompatible manganese nanoparticles have been linked with zinc and iron molecules to prepare different derivatives of MnZnErYFeO NPs (x = 0.02, 0.04, 0.
View Article and Find Full Text PDF[NiCuZn](Fe Dy )O spinel ferrite nanoparticles with different Dy concentrations (0.00 ≤ ≤ 0.04) were prepared by a citrate sol-gel auto-combustion technique.
View Article and Find Full Text PDFLa-, Nd- and La/Nd-based polysubstituted high-entropy oxides (HEOs) were produced by solid-state reactions. Composition of the B-site was fixed for all samples (CrMnFeCoNi) with varying of A-site cation (La, Nd and LaNd). Nominal chemical composition of the HEOs correlates well with initial calculated stoichiometry.
View Article and Find Full Text PDFPenicillin G is an old and widely used antibiotic. Its persistence in the environment started to appear in many environmental samples and food chains. The removal of these emerging pollutants has been a challenging task for scientists in the last decades.
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