Inorganic Materials

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Preparation of nanocrystalline VO y by high-energy ball milling
Inorganic Materials - Tập 47 - Trang 408-411 - 2011
A. A. Valeeva, H. Schroettner, A. A. Rempel
We report high-energy milling of macrocrystalline nonstoichiometric cubic vanadium monoxide (VO y ) powder in a planetary ball mill lined with stabilized zirconia. The results indicate that milling of macrocrystalline VO y powder at 500 rpm for more than 2 h considerably broadens diffraction line profiles, with no changes in the ...... hiện toàn bộ
Effect of Hydrostatic Pressure on the Transport Properties of Cadmium Diarsenide Crystals
Inorganic Materials - Tập 37 - Trang 327-330 - 2001
A. Yu. Mollaev, L. A. Saipulaeva, R. K. Arslanov, S. F. Marenkin
The electrical resistivity and Hall coefficient of n-type CdAs2crystals cut along [001] and [100] were measured at hydrostatic pressures in the range 0–9 GPa. The ρ(P) and R H(P) curves for the [001] direction show three peaks at 1.8, 3, and 5.5 GPa. In the [100] direction, the curves show two peaks at 3 and 5.5 GPa. The peaks at 1.8 and 3 GPa are likely related to impurity levels. The peak at 5.5...... hiện toàn bộ
Thermoelectric Properties of SmS x (x = 0.8–1.5)
Inorganic Materials - Tập 39 - Trang 1251-1257 - 2003
A. V. Golubkov, M. M. Kazanin, V. V. Kaminskii, V. V. Sokolov, S. M. Solov'ev, L. N. Trushnikova
SmS x materials with x = 0.8–1.5 are synthesized, and their electrical properties are studied in order to ascertain whether they can be used in thermoelectric converters. The results indicate that the optimal composition is SmS0.96, with a thermoelectric figure of merit Z ∼ 0.9 × 10–3 K–1 at 1000 K. The conductivity and thermopower data for SmS ...... hiện toàn bộ
Influence of water-organic solvent composition on composition and structure of Pt/C and Pt x Ni/C electrocatalysts in borohydride synthesis
Inorganic Materials - Tập 45 - Trang 498-505 - 2009
V. E. Guterman, S. V. Belenov, O. V. Dymnikova, T. A. Lastovina, Ya. B. Konstantinova, N. V. Prutsakova
Nanostructured Pt/C and Pt x Ni/C materials containing from 4 to 30 wt % Pt were prepared using the method of chemical reduction of platinum and nickel compounds in the liquid phase by sodium borohydride solution. The change in the nature of the organic component (ethylene glycol, dimethyl sulfoxide, dimethyl formamide, tetrahydrofuran, acetone, ethyl alcohol, and...... hiện toàn bộ
Synthesis and Study of Ion Adsorption and Fluorescent Properties of Silica-Grafted Bis(crownazo)methine
Inorganic Materials - Tập 40 - Trang 1006-1013 - 2004
B. V. Zhmud, A. A. Golub, V. G. Pivovarenko
A ketocyanine ligand containing two N-aza-15-crown-5 residues has been synthesized and covalently anchored to a silica substrate through an azomethine link. The ligand formation and molecular structure have been determined by combining spectral data and molecular simulations. Preferential adsorption of rare-earth metals from aqueous solutions to the modified surface has been noticed. In the case o...... hiện toàn bộ
Increased Manganese Solubility and Ferromagnetic Signal in Chalcopyrite CuGaSe2:Mn as a Result of High-Temperature Quenching
Inorganic Materials - Tập 58 - Trang 18-25 - 2022
M. A. Zykin, N. N. Efimov
Two series of manganese-doped chalcopyrite CuGaSe2 samples have been prepared by solid-state reactions. Because of its low solubility, the manganese is distributed between chalcopyrite lattice sites, ensuring paramagnetic properties, and manganese-containing antiferromagnetic impurity phases. Quenching the samples from 1000°C has made it possible to considerably increase the ferromagnetic response...... hiện toàn bộ
Superparamagnetic γ-Fe2O3 nanoclusters in silicate matrices
Inorganic Materials - Tập 42 Số 4 - Trang 377-380 - 2006
Yu. V. Maksimov, I. P. Suzdalev, V. N. Ikorskiǐ, О. Г. Эллерт, В. М. Новоторцев, М. В. Цодиков, J.A. Navı́o
Inelastic Properties of Amorphous and Nanocrystalline Fe–P–Mn–V Alloys
Inorganic Materials - Tập 40 - Trang 815-821 - 2004
V. V. Vavilova, D. A. Vygovskii, Yu. E. Kalinin, Yu. K. Kovneristyi, N. A. Palii
The processes occurring in amorphous Fe–P–Mn–V alloys at elevated temperatures, up to the crystallization temperature, are investigated by internal friction measurements and x-ray diffraction analysis. The results are used to evaluate the activation energy of defect migration and the particle size of the crystalline phases precipitating in the alloys during annealing. It is shown that increasing t...... hiện toàn bộ
Preparation and Properties of Polycrystalline ZnS for IR Applications
Inorganic Materials - Tập 39 - Trang 663-668 - 2003
E. V. Yashina
Data are summarized on the optical and mechanical properties of polycrystalline ZnS prepared by different methods. Particular attention is paid to the effect of impurities on the properties of ZnS and the optimization of its performance parameters for IR optical applications.
Effect of Low Neutron Doses on the Properties of Synthetic Diamond Crystals
Inorganic Materials - Tập 39 - Trang 349-352 - 2003
A. G. Dutov, V. B. Shipilo, V. A. Komar, I. I. Azarko, N. V. Shipilo
The effect of neutron irradiation on the properties of diamond crystals prepared in the Mn–Ni–C system (5.5 GPa, 1620–1670 K, 120–300 s) was studied. The results indicate that irradiation increases the strength of the crystals and reduces the concentration of paramagnetic centers. The observed changes are interpreted in terms of interaction between intrinsic defects and impurities.
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