Materials Literature
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BiFeO3-LiMn2O4 (BFO-LMO) heterostructures were fabricated via pulsed laser deposition, and their ferroelectric and ferromagnetic properties were probed by magnetic force microscopy (MFM), piezoresponse force microscopy (PFM), and the newly developed piezomagnetic force microscopy (PmFM). MFM imaging shows no clear dis…
Extensive two- and three-dimensional periodic first-principles simulations have been carried out to investigate the mechanical response of graphite to hydrostatic and nonhydrostatic stress conditions. Our results show a clear analogy between uniaxial $({\ensuremath{\sigma}}_{z})$ stress and hydrostatic pressure as far…
Abstract We present the first investigation of photoisomerization of the azo‐based electroactive polyimide ( PI )/amino‐functionalized multiwalled carbon nanotube ( MWCNT ) composite electrode on the effect of electrochemical sensing for ascorbic acid ( AA ). First, MWCNTs were grafted with 4‐aminobenzoic acid in a me…
BiFeO3 thin films were epitaxially grown on (001) GaAs substrate by pulsed laser deposition with Nb doped SrTiO3 as a buffer layer. Piezoresponse force microscopy images exhibit effective ferroelectric switching of the heterostructure. The temperature-dependent current-voltage characteristics of the heterostructure re…
In the present paper, effects of pitting corrosion on the strength of members made of AISI 410 Martensitic stainless steel were investigated. Stainless steel compressor blades in power generation industries commonly suffer from pitting corrosion. Pits geometry analysis and strength tests have been conducted. Pits geom…
We report on temperature dependence of local electromechanical properties of lead-free (K,Na)NbO3-based ceramics that macroscopically manifests a large temperature-insensitive strain. Piezoresponse force microscopy reveals the particular role of the orthorhombic-tetragonal phase transition, where a reconstruction of t…
We reported the design, synthesis, and properties of two series of polyimides based on pyrimidine nuclei with adjusted monomers’ molar ratios, using 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA) as dianhydride monomer, 2,4,6-triaminopyrimidine (TAP), and 4,4′-diaminodiphenyl ether (ODA) as amine monomers. N…
Abstract Above‐room‐temperature polar magnets are of interest due to their practical applications in spintronics. Here we present a strategy to design high‐temperature polar magnetic oxides in the corundum‐derived A 2 BB′O 6 family, exemplified by the non‐centrosymmetric ( R 3) Ni 3 TeO 6 ‐type Mn 2+ 2 Fe 3+ Mo 5+ O 6…
Motivated by emergent phenomena at oxide surfaces and interfaces, particularly those involving transition metal oxides with perovskite crystal structure such as ${\mathrm{LaTiO}}_{3}/{\mathrm{SrTiO}}_{3}$, we examine the ferromagnetic Kondo lattice model (FKLM) in the presence of a Rashba spin-orbit coupling (RSOC). U…
A biphasic impact copolymer of polypropylene (ICP) was modified with peroxide by reactive extrusion process resulting in reduced melt flow index, improved melt strength, and higher die swell. The polymers were for the first time subjected to systematic rheological and microstructural characterization in an effort to u…
By means of ab-initio calculations, we study the surface magnetism of carbon foam, a carbon allotrope constructed by both the sp2 and sp3 hybridized carbon atoms. It is found that the sp3-terminated surface and sp2-terminated surface with hydrogen saturation (sp2H) have the antiferromagnetic and ferromagnetic ground s…
Metallic states appearing at interfaces between dissimilar insulating oxides exhibit intriguing phenomena such as superconductivity and magnetism. Despite tremendous progress in understanding their origins, very little is known about how to control the conduction pathways and the distribution of charge carriers. Using…
Poly(divinylbenzene-alt-maleic anhydride) nanoparticles with a narrow distribution and a diameter of 30 nm act as novel stabilizers in the Pickering emulsion polymerization of styrene. The hydrolyzed PDMNPs with NaHCO3 aqueous solution exhibited a very effective emulsification performance and a remarkably high emulsif…
Adipic acid pentaerythritol ester (AAPE) was synthesized in this study and confirmed by Fourier transform infrared spectroscopy (FTIR). The synergistic effect of AAPE with calcium and zinc stearates (CaSt 2 /ZnSt 2 ) on poly(vinyl chloride) (PVC) thermal stability was evaluated by the conductivity test, thermal aging…
ABSTRACT Linear [ m,n ]‐type polyurethanes (PUs) fully based on renewable materials are synthesized by interfacial polycondensation reaction of diamines derived from the amino‐acid cystine with (bis)chloroformates derived from alditols having L‐ arabino or xyl o configuration. The degradability of the new PUs has been…
The solubilities of l -valine in water, ethanol, N, N -dimethylformamide, acetone, and isopropyl alcohol were experimentally measured by the synthetic method over the temperature range from (293.15 to 343.15) K at atmosphere pressure. The solubilities of l -valine in pure solvents increase with increasing temperature…
Chemisorbed hydrogen on boron nitride nanotubes (BNNT) can only be released thermally at very high temperatures above 350 °C. However, no catalyst has been identified that could liberate H2 from hydrogenated BN nanotubes under moderate conditions. Using different density functional methods we predict that the desorpti…
Considerable attention has been paid to ferroic systems in pursuit of advanced applications in past decades. Most recently, the emergence and development of multiferroics, which exhibit the coexistence of different ferroic natures, has offered a new route to create functionalities in the system. In this manuscript, we…
Batisite was reported to be a nonlinear optical material showing second harmonic generation. Using dielectric spectroscopy and polarization measurements, we provide a thorough investigation of the dielectric and charge-transport properties of this material. Batisite shows the typical characteristics of a linear lossy…
Anopyxis klaineana (Pierre) Engl. (Rhizophoraceae) is one of the reputed West African folkloric medicines that has never been investigated for its pharmacological effects or phytochemical constituents. In the present study, the antiinflammatory properties of the stem-bark extracts were evaluated using the carrageenan-…