For the first time, a new facile approach based on simple and inexpensive chemical spray pyrolysis (CSP) technique is used to deposit Tungsten (W) doped nanocrystalline SnO2 thin films. The textural, optical, structural sensing properties are investigated by GAXRD, UV spectroscopy, FESEM, AFM, home-built setup. gas results indicate that, as compared pure SnO2, 1 wt % W-doping improves sensitivity along with better response (<2 s) recovery time (<25 toward NO2 at operating temperatures of...

Magnetic anomalies corresponding to the Verwey transition and reorientation of anisotropic vacancies are observed at 151 K 306 K, respectively, in NiCoFe2O4 nanoparticles (NPs) synthesized by a modified-solvothermal method followed annealing. Cationic disorder spherical shape induced non-stoichiometry suppress as-synthesized NPs. On other hand, is quite robust. XRD electron microscopy investigations confirm single phase spinel structure surface morphology NPs changes from octahedral upon...

In this article, room temperature ethanol sensing behavior of p-type Ce doped SnO2 nanostructures are investigated successfully. Interestingly, it is examined that the abnormal n to transition caused by doping in lattice. SnO2, ion substituting Sn favor generating excess holes as oxygen vacancies, which associated with improved performance. Although, one important materials for practical applications, less studied compared n-type SnO2. Pure and were successfully synthesized chemical...

The recent surge in the usage of electronics has led to a new kind problem; electromagnetic interference which necessitates finding alternate materials that offer ease processing, design flexibility, light weight, and embedding integrating with existing systems place as shields protect precise electronic circuitry. Herein, lightweight polycarbonate (PC)-based nanocomposites using doped graphene derivatives multiwalled carbon nanotubes (MWCNT) been explored for effective shielding EM...

Flexible microwave absorber composite films of carbon black (CB)/barium hexaferrite nano-discs (BaF) in polyvinyl alcohol (PVA) matrix, fabricated by gel casting, exhibit ∼99.5% attenuation electromagnetic waves the entire 8–18 GHz (X and Ku-band) range. The X-ray diffraction Raman spectroscopy studies confirm formation CB-BaF-PVA films. absorption properties are found to be enhanced with CB content due synergetic effect multiple dielectric magnetic losses. 25 wt. % grafted PVA-BaF flexible...

Cationic disorder and particle size effects are found to be highly sensitive temperature dependent ferromagnetic resonance of Ni–Co ferrites significantly improve the shielding effectiveness flexible ferrite–carbon black/PVA composites.

Nano-ferrites with tunable dielectric and magnetic properties are highly desirable in modern electronics industries. This work reports the effect of ferromagnetic (Ni), anti-ferromagnetic (Mn), non-magnetic (Zn) substitution on cobalt-ferrites' properties. The Rietveld analysis XRD data Raman spectroscopic study reveals that all samples crystallized Fd-3m space group. T2g mode was observed to split into branches, which is due presence different cations (with vibrational frequencies) at...

Ni0.5Zn0.5Fe2O4 is one of the most versatile and technologically indispensable soft magnetic materials; however, a detailed investigation on effect substitution-induced cation redistributionon ferromagnetic resonance (FMR) properties Ni–Zn-nanoferrites (NFs) remains elusive. Herein, we demonstrate that modulation superexchange interactions via dopant-driven cationic redistribution an efficient way to maneuver static dynamic Mn-substituted Ni0.5Zn0.5Fe2–x(Mn)xO4 NFs. Employing combination...

Tin oxide nanowires (NWs) were deposited successfully on silicon substrate. Depending the distance between source and substrate, NWs exhibit either a single phase structure or mixed structure, latter exhibits enhanced sensitivity to CO detection.

Magnetically separable, barium hexaferrite (BaFe12O19) nanoplatelets were synthesized at various temperatures by cost-effective, molten salt technique and its photocatalytic activity was compared with commercially available TiO2. BaFe12O19 nanostructures characterized using UV–vis-DRS, FE-SEM, XRD, BET, Raman further, subjected to degradation of an organic pollutant, hexahydro-1,3,5-trinitro-1,3,5 triazine (RDX) under UV visible light. The reaction parameters, kinetics, mechanism thoroughly...

This article describes the preparation of composite conductive yarn from stainless steel and polyester staple fibre with different composition adopting worsted spinning system. The conducting was successfully woven into variety hybrid structures in Picanol Gammax Rapier Loom. aim this research to develop conductivity level (linear resistance 6–9 kΩ/m 150–200 Ω/m) subsequent conversion ultra-lightweight fabric (~100 gsm) for providing electro-magnetic interference/radio frequency interference...

Thermoelastic martensitic transformation from a face-centered-cubic austenite phase to tetragonal martensite has been established in new ternary ferromagnetic alloy system Ni–Fe–Al (“prepared” different states of site disorder) based on the results detailed neutron diffraction, electrical resistivity, and magnetization studies. Ordered (annealed) Ni55Fe20Al25 high Curie temperature TC⪢300K an extremely wide range over which phases coexist. By comparison, site-disordered (quenched) lower TC...

We report the experimental results of ${\text{CeRu}}_{2}{\text{Al}}_{10}$ by means transport, thermal, as well $^{27}\text{A}\text{l}$ nuclear magnetic resonance (NMR) measurements. This material has been current interest due to indications heavy-fermion behavior accompanied presence an anomalous phase transition at ${T}_{o}\ensuremath{\sim}27\text{ }\text{K}$. The characterized marked features near ${T}_{o}$ in all measured physical quantities. NMR observations clearly indicated nonmagnetic...

A study of controlling the microwave mitigation properties ferrite-carbon black/PVA composites by tuning magnetic microstructure and spin arrangement ferrite particles is presented. MxCo(1-x)Fe2O4 (M: Ni2+, Mn2+ & Zn2+) nano-ferrites (NFs) were synthesized a solvothermal method these NFs used to fabricate NF-CB hybrids flexible NF-CB/PVA composite films. The force microscopy studies reveal unique single axis oriented domain structure for Zn-NFs multi-domain microstructures Mn-NFs Ni-NFs....

To improve electromagnetic (EM) wave attenuation and its absorption properties, herein, for the first time, we grow needle-like magnetic NiCo2O4 nanoparticles in situ on lightweight open cell reticulated vitreous carbon (RVC) foam by hydrothermal method, leading to hierarchically nanostructured foam. The was synthesized carbonization of flexible polyurethane followed acid treatment. coating structure, stability, performance were systematically investigated various complementary techniques...