Materials Literature
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We investigated the electrical erasing of information recorded by a holographic method in an amorphous As 40 Ge 10 Se 15 S 35 chalcogenide thin film. Even though the amplitude of photoinduced birefringence (Δ n ) strongly depends on applied DC voltage ( V DC ), the kinetics exhibits a tendency. For V DC =0–3 V, Δ n in…
Abstract A novel framework, (NH4)2Ag6Sn3S10, was synthesized solvothermally and characterized by single-crystal X-ray diffraction. The framework comprises silver-rich cationic layers, [Ag6SnS4]2+, pillared by [SnS3]2− zigzag chains formed by vertex-sharing SnS4 tetrahedra; NH4+ ions are located in 1D channels.
The structure of a CaMnO 3 − δ perovskite single crystal was studied for the first time using thermal neutron diffraction in the temperature range 300–840 K. It was detected that oxygen vacancies in the crystal are ordered into two types of superstructure. A phase with a relative number of vacancies δ = 1/4 occupies t…
Abundant microdiamonds occur as inclusions in garnet and diopside in dolomite marble from the Kumdy-kol area of the Kokchetav Massif. These microdiamonds have been classified by previous work into three types (S type, R type, T type) according to their morphology. S-type diamond, the most abundant type in Kokchetav do…
The thermoelectric properties of delafossite-type layered oxides AgIn1−xSnxO2 that consist of alternating layers of Ag and In1−xSnxO2 were investigated to elucidate their potential as a thermoelectric material. Polycrystalline materials of the AgIn1−xSnxO2 were prepared by a cation exchange reaction between NaIn1−xSnx…
Abstract In this study, the deformation-induced misorientations that are typically found in face-centred cubic single crystals deformed in single slip into stage II (and early stage III) of the work-hardening curve are discussed with respect to the experimentally observed broadening of X-ray rocking curves. By making…
SrS:Ce phosphor was prepared by a solid-state diffusion method. Powder X-ray diffraction, transmission electron microscopy, and thermogravimetric analysis were used to characterize the as-prepared product, and the optical properties were studied by photoluminescence spectra. In addition, thermoluminescence and electro…
Preferential solvation of polymer molecules and strong EPD-EPA (EPD, electron pair donor; EPA, electron pair acceptor) interaction between solvent and nonsolvent molecules were found to be of great significance in the fabrication of two kinds of aromatic polyimide (AP) nanoparticles. Surfactant free yet stable AP nano…
Abstract An efficient procedure for the synthesis of near‐infrared dyes 5a‐d is described.
Hexachlorocyclodiphosph(V)azane of sulfamethoxazole, H2L, reacts with stoichiometric amounts of transition metal salts such as Fe(III), Co(II), Ni(II), Cu(II), Zn(II), and UO2(II) to afford coloured complexes in a moderate to high yield. The structure of the isolated complexes was suggested based on elemental analyses…
Iron-containing ferroelectrics tend to exhibit large dielectric loss accompanied by strong frequency dispersion of the dielectric properties, which is considered to correlate with the partial reduction of Fe 3+ to Fe 2+ ions during sintering. After sintering in an O 2 atmosphere, MnO 2 and Li 2 CO 3 dopings exhibit su…
FCC metals with different stacking fault energy (SFE), namely Al, Cu and Ag have been investigated for the evolution of crystallographic texture during ECAE deformation using Route A. Different materials with different SFE result in their characteristic textures. The results have been analysed on the basis of microstr…
New liquid crystalline chloro‐substituted thioesters containing two and three benzene rings have been synthesized. 4‐Chlorophenyl 4‐n‐alkoxythiobenzoates and 4‐chlorophenyl 4‐n‐alkoxybenzoyloxy‐4′‐thiobenzoates are referred to as nO.SCl and nO.OSCl, respectively, where n varies from 4 to 16 for nO.SCl, from 4 to 10 fo…
The administration of factor VIII (FVIII) by continuous infusion (CI) to manage severe haemorrhage or during major surgery appears pharmacokinetically and economically favourable when compared with intermittent bolus infusions. Successful clinical use of FVIII delivered by CI, however, requires a thorough assessment o…
The hydrazone ligand, methyl‐2‐pyridyl ketone benzoyl hydrazone (L), and its complexes with rare earth nitrates have been synthesized. These new complexes with the general formula of Ln(L)2(NO3)3 · nH2O (where Ln=La, n=5.5; Ce, Pr, n=5; Nd, Eu, n=4) were characterized by mass spectra, elemental analysis, IR spectra, t…
Novel Zn (II) phthalocyanine and naphthalocyanine DBU complexes have been prepared in a one-pot synthesis reacting phthalonitrile precursors with an excess of DBU (1,8-diazabicyclo[5.4.0]undec-7-ene). For the first time, it has been well evidenced that DBU played the role of coordinating axial ligand together with the…
The results of studying the effect of irradiation with fast neutrons in an IBR-2 reactor on the characteristics of magnetic-field sensors based on n + -InSb whisker microcrystals are reported (the measurements were carried out in the course of the irradiation). The optimum concentration of free electrons n for providi…
Weathering can cause colour changes in pigmented PVC plastisol coatings. The rate of colour change is dependent on a number of factors, such as PVC resin, pigment type and concentration, and local climate. In this paper, an investigation into the mechanisms that cause these colour changes is reported. The investigatio…
The structure, electrical, and magnetic properties of epitaxial LaCa(Sr)MnO single crystal films with a clustered structure have been studied. In films with a “metallic” phase content C m 0 ≤0.15, the electric conductivity is determined by the spin-dependent tunneling of charge carriers between “ metallic” clusters, a…
Dielectric response of (0–3) type composites, made of BaTiO 3 particles with mean size of 20–30 nm and polyvinylidene fluoride was found to be determined by the response of BaTiO 3 with a broad Curie point anomaly at TC ≈ 317 K. The dielectric anomaly appears in the same temperature range where the decrease in the wav…