Materials Literature
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The corrosion inhibition of mild steel in 5.0M sulphuric acid solutions by crude extracts of Spondias cytherea leaves (S.C) were studied using gravimetric and gasometric techniques. The results showed that S.C. can serve as a corrosion inhibitor in acid medium. Inhibition efficiencies (%I) of the S.C extract were foun…
We calculate magnetic susceptibility of paramagnetic bcc Fe-Mn and Fe-V alloys by two different approaches. The first approach employs the coherent potential approximation (CPA) combined with the dynamical mean-field theory (DMFT). The material-specific Hamiltonians in the Wannier function basis are obtained by densit…
The NiAs-type structure is one of the most common structures in solids, but metal order has been almost exclusively limited to chalcogenides. The synthesis of HfMnSb2 is reported with a novel metal-ordered NiAs-type structure. HfMnSb2 undergoes a conical spin order below 270 K, in marked contrast to conventional magne…
Purpose – Traditionally, an armor-grade composite is based on a two-dimensional (2D) architecture of its fiber reinforcements. However, various experimental investigations have shown that armor-grade composites based on 2D-reinforcement architectures tend to display inferior through-the-thickness mechanical properties…
We report a detailed study of the magnetic properties of CeCo0.85Fe0.15Si under high magnetic fields (up to 16 Tesla) measuring different physical properties such as specific heat, magnetization, electrical resistivity, thermal expansion and magnetostriction. CeCo0.85Fe0.15Si becomes antiferromagnetic at [Formula: see…
Visbreakers and other thermal cracking units are thermal process units in crude oil refineries that upgrade heavy petroleum, usually residual oils produced from atmospheric or vacuum distillation of crude oil. The associated process streams of these units consist of heavy hydrocarbons with very high viscosities and im…
Purpose – The purpose of this paper is to find the method for determining the displacement of the active element in a giant magnetostrictive transducer. Design/methodology/approach – The giant magnetostrictive transducer with the active element made of Terfenol-D has been considered. A structure with an axisymmetrical…
Four cobalt(II) compounds, [Co(Bim)(IA)(H2O)2]n·0.5nH2O (1), [Co(Bim)(MA)(H2O)2]n (2), [Co2(Bim)2(MA)2]n·nH2O (3), and [Co3(Bim)4(TA)2(H2O)2]n·2.5nH2O (4), have been synthesized by solvothermal reactions of cobalt(II) salts with 1,1′-(5-methyl-1,3-phenylene)bis(1H-imidazole) [Bim] and aromatic polycarboxylic acids (H2…
The present chapter is devoted to the study of amorphous (a-Si:H), polymorphous (pm-Si:H), and microcrystalline (μc-Si:H) silicon, deposited by the plasma-enhanced chemical vapor deposition (PECVD) technique at low temperatures. We have studied the main deposition parameters that have strong influence on the optical,…
Single wall carbon nanotubes (SWNTs) are known for their exceptional electronic properties. However, most of the synthesis methods lead to the production of a mixture of carbon nanotubes having different chiralities associated with metallic (m-SWNTs) and semiconducting (s-SWNTs) characteristics. For application purpos…
Increasing the wear resistance of the traveller remains an immense challenge due to the high mechanical and thermal stress experienced by travellers during the spinning operation. Due to this exposure, surface deformation, such as scratches and coating deformations, are unavoidable. In this study, two kinds of travell…
(Na 1− x K x )NbO 3 ( NKN ) platelets synthesized at 600°C for 12 h have an Amm 2 orthorhombic structure. However, the structure of NKN platelets synthesized at 500°C is a mixture of R 3 m rhombohedral and Amm 2 orthorhombic structures. The formation of a rhombohedral structure is attributed to the presence of OH − an…
Abstract Methylammonium lead iodide perovskite (MAPbI3), a prototype material for potentially high‐efficient and low‐cost organic–inorganic hybrid perovskite solar cells, has been investigated intensively in recent years. A study of low‐energy electron‐induced transformations in MAPbI3 is presented, performed by combi…
Detailed experimental data on UPO4Cl comprising single-crystal UV/vis/NIR spectra and temperature-dependent magnetic susceptibilities form the basis for the investigation of the electronic structure of the U(4+) cation in UPO4Cl. For modeling of the observed physical properties the angular overlap model (AOM) was succ…
Atomic layer deposition (ALD) is an increasingly popular thin film deposition technique which offers unique large area capability combined with excellent conformality, thus ALD will likely be important in the development of next generation optoelectronic devices. Such device platforms include solar cells, thin film tr…
The aim of this study was to produce advanced nanofiber mats by adding boron nitride to poly (ɛ-caprolactone) polymer using an electrospinning method and to characterize the resultant structures. Pure poly (ɛ-caprolactone) nanofiber mats and boron nitride-doped nanofiber mats prepared at different concentrations were…
Abstract We developed a luminescent probe for the selective and sensitive detection of an explosive, i.e., picric acid (PA), based on the luminescence quenching of CeIII and TbIII co‐doped Sr2GdF7 nanocrystals. A new colloidal synthesis route at low temperature (80 °C) was developed to synthesize the luminescent nanoc…
Reducing the accelerating voltage used to pattern a high-resolution inorganic thin film electron beam resist, HafSOx dramatically decreases the dose required to pattern sub-10 nm lines. Ellipsometry measurements of dose curves created for HafSOx show a dramatic increase in sensitivity without any loss in contrast. Hig…
Departures from thermal, chemical equilibrium of a plasma flow in a low-power arcjet thruster with a 1:2 nitrogen/hydrogen mixture as the working gas have been studied by axisymmetric numerical simulations. Electrons, ions, atoms, and molecules are represented as separate chemical species in the plasma mixtures of nit…
Bringing the functionality of molecular systems to interfaces while avoiding cross-talk and loss of function is essential to realize their full potential. The photochromic and -physical properties in polymer films formed from a terthiophene–diarylethene bifunctional monomer are lost due to aggregation but restored by…