共查询到20条相似文献,搜索用时 15 毫秒
1.
T. V. Mikhailichenko L. A. Kalinina Yu. N. Ushakova G. I. Shirokova T. V. Tokareva 《Russian Journal of Electrochemistry》2011,47(5):556-562
The possibility of synthesizing complex sulfide phases in the BaSm2S4-Tm2S3 system has been studied. Tm2S3 solid solutions were obtained with BaSm2S4 (CaFe2O4 structural type). The samples were identified by X-ray diffraction analysis and electron microscopy. The range of the solid
solutions was determined. The total conductance was studied, and the conductance activation energy was calculated for samples
with different dopant contents. The electrolytic properties of basic ternary sulfide and complex sulfide phases in the BaSm2S4-x mol % Tm2S3 system were investigated. A possible mechanism of defect formation was proposed. 相似文献
2.
Processes involved in the preparation of zirconia and yttria thin films by sol-gel technology from film-forming solutions (FFSs) were studied over the entire range of concentrations. The physicochemical properties, composition, and structure of the films were studied. 相似文献
3.
I. S. Yurlov Yu. N. Ushakova O. V. Medvedeva L. A. Kalinina G. I. Shirokova B. A. Ananchenko 《Russian Journal of Electrochemistry》2007,43(6):638-643
Coefficients of self-diffusion and coefficients of diffusion of the sulfur ion in solid electrolytes BaSm2S4 and CaGd2S4 are determined with recourse to methods of conductimetry and potentiostatic chronoamperometry. A vacancy mechanism for the defect formation in solid solutions on the basis of barium thiosamarate and calcium thiogadolynate is proposed. 相似文献
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5.
I. B. Bakhtiyarly R. I. Kerimov R. D. Kurbanova 《Russian Journal of Inorganic Chemistry》2007,52(12):1987-1990
The La2S3-Ga2S3-EuS system has been investigated along the 3Ga2S3-EuLaGa3S7 join by physicochemical methods (DTA, X-ray powder diffraction, microstructural analysis). is a quasi-binary eutectic-type section of the ternary system. Solubility on the base of both components has been revealed in the system. Solubility at room temperature is 3 mol % EuLaGa3S7 on the Ga2S3 side 1.5 mol % Ga2S3 and on the base of the EuLaGa3S7 compound. The coordinates of the eutectic point are 80 mol% EuLaGa3S7 and 1020 K. 相似文献
6.
I. V. Bodnar’ 《Russian Journal of Inorganic Chemistry》2010,55(6):835-840
Homogeneous MnIn2S4 single crystals ∼14 mm in diameter and ∼40 mm long were grown by directional solidification of melt. For these MnIn2S4 single crystals, the composition was determined by electron probe microanalysis, structure by X-ray diffraction, and melting
temperature by differential thermal analysis. Transmission spectra were studied in these single crystals, in the region of
the intrinsic absorption edge within 10–300 K. The transmission spectra were used to determine the bandgap width, and it was
plotted as a function of temperature. The thermal expansion of MnIn2S4 single crystals was studied dilatometrically in the range 80–700 K, and the thermal expansion coefficient was determined. 相似文献
7.
Yu. N. Ushakova L. A. Kalinina I. S. Yurlov T. V. Bayderina I. V. Murin 《Russian Journal of Electrochemistry》2009,45(6):677-683
Solid solutions based on BaSm2S4 ? x mol % BaS (Sm2S3) are obtained. Oxide intermediates were homogenized using chemical and mechanical mixing methods. The solid solution region is determined. Complex conductivity is studied and conductivity activation energy is calculated for samples with different history. Electrolytic properties of phases based on barium thiosamarate are studied. Vacancy mechanism of defect formation is suggested. 相似文献
8.
A. V. Kulebyakin E. E. Lomonova N. I. Medvedovskaya A. V. Shcherbakov 《Russian Journal of Electrochemistry》2009,45(4):444-449
This work represents the results of oxygen redistribution studies at quantitative and isotopic levels in synthesis and thermal treatment of ZrO - (0 to 35 mol %) Y2O3 solid solution crystals. The crystals were grown by directed melt crystallization method in a cold container using direct high-frequency heating. The crystal oxygen content and isotopic composition data was collected with respect to stabilizer concentration and technological conditions of synthesis. The temperature and frequency relationships of crystal electroconductivity were also studied. Some strength and tribological characteristics of the given materials were represented. The solid state formation by directional melt crystallization was shown to involve oxygen isotopic exchange interaction between the melt, growing crystal, and gas phase. 相似文献
9.
I. B. Bakhtiyarly A. V. Neimatova F. M. Mamedov 《Russian Journal of Inorganic Chemistry》2010,55(4):620-625
Phase equilibria in the La2S3-Bi2S3-La2O3 ternary system were studied by differential thermal, X-ray powder diffraction, and microstructure analyses. Phase diagrams
of five vertical sections and a liquidus surface projection were plotted for the La2S3-Bi2S3-La2O3 system. The regions of primary crystallization of phases and coordinates of non- and monovariant equilibria were determined
for the system. 相似文献
10.
I. V. Vasilenko O. Cador L. Ouahab V. V. Pavlishchuk 《Theoretical and Experimental Chemistry》2010,46(5):322-327
It was shown that the reaction of the trinuclear complex [FeFe2O(CH3CO2)6(H2O)3]·2H2O with thiourea in tetraethylene glycol leads to the formation of nanoparticles of thiospinel Fe3S4, the size of which depends on the reaction conditions. It was established that the formed thiospinel particles exhibit superparamagnetic
characteristics. It was shown that the size of the nanoparticles has an effect on their magnetic characteristics. 相似文献
11.
The MnS-Pr2S3 phase diagram is of the eutectic type with incomplete solubility based on the starting sulfides (MnS and Pr2S3). The extent of the MnS-based solid solution at 1470 K is 1 mol % Pr2S3. γ-Pr2S3 at 1470 K dissolves 23 mol % MnS, α-Pr2S3 at 1170 K dissolves 6 mol % MnS. The eutectic composition (30 mol % Pr2S3 at 1550 K) coincides with the value calculated from the Schroeder equation for the liquidus branch descending from MnS. A
value of 64 kJ/mol was calculated for the heat of melting of Pr2S3 using the Schroeder equation. 相似文献
12.
I. I. Aliev I. G. Aliev A. A. Farzaliev Dzh. A. Veliev 《Russian Journal of Inorganic Chemistry》2008,53(6):962-964
The TlAs2Se4-Tl3As2S3Se3 system was investigated by physicochemical methods (DTA, X-ray powder diffraction, microstructural analysis), and its phase diagram was constructed. The TlAs2Se4-Tl3As2S3Se3 join is a quasi-binary internal section of the As-Tl-S-Se quaternary system. The solubility range of TlAs2Se4-based solid solutions is extended to 7 mol %, and the region of Tl3As2S3Se3-based solid solutions is extended to 15 mol %. 相似文献
13.
O. V. Andreev A. S. Vysokikh V. G. Vaulin 《Russian Journal of Inorganic Chemistry》2008,53(8):1320-1324
The Sm2S3-Sm2O3 phase diagram was studied by physicochemical methods of analysis from 800 K up to melting. Two oxysulfides are formed in the system: Sm10S14O with tetragonal crystal structure (space group I41/acd; unit cell parameters: a = 1.4860 nm, c = 1.9740 nm; microhardness: H = 4700 MPa; solid decomposition temperature: 1500 K) and Sm2O2S with hexagonal structure (space group P-3m1; a = 0.3893 nm, c = 0.6717 nm; H = 4500 MPa; congruent melting temperature: 2370 K). Within the extent of the Sm2O2S-based solid solution (61–70 mol % Sm2O3) at 1070 K, a singular point appears at the compound composition on property-composition curves. The eutectic coordinates: 23 mol % Sm2O3 and 1850 K; 80 mol % Sm2O3 and 2290 K. 相似文献
14.
R. D. Apostolova E. M. Shembel’ I. Talyosef J. Grinblat B. Markovsky D. Aurbach 《Russian Journal of Electrochemistry》2009,45(3):311-319
With the purpose to obtain a sulfide material for lithium and lithium-ionic thin-film batteries, cobalt sulfide Co9S8 was synthesized on an aluminum foil or stainless steel by electrolysis of aqueous solutions containing cobalt sulfate, sodium thiosulfate and sodium sulfide. The surface morphology of electrolytic Co9S8 is characterized by close packing of ball-like particles 8–12 μm in diameter, consisting of submicrometer structures 300–400 nm in size. It was found that e-Co9S8 electrodes exhibit stable behavior during 100 lithiation-delithiation cycles in a voltage range of 2.8–1.1 V, providing a discharge capacity of ~200 mAh/g. In a lithium cell with ethylene carbonate (EC)-dimethyl carbonate (DMC)-1M LiClO4 electrolyte, a discharge capacity of the e-Co9S8-electrode was 250–450 mAh/g in a voltage range of 2.80–0.2 V. It was found that higher discharge capacities can be achieved for e-Co9S8-electrodes with a smaller active material mass. 相似文献
15.
S. P. Khranenko I. A. Baidina S. A. Gromilov A. V. Belyaev 《Journal of Structural Chemistry》2005,46(6):1060-1065
Powder and single crystal X-ray diffraction studies have been performed for anhydrous nitrate complexes Rb2[Pd(NO3)4] (I) and Cs2[Pd(NO3)4] (II). Crystal data for I: a = 7.843(1) Å, b = 7.970(1) Å, c = 9.725(1) Å; β = 100.39(1)°, V = 597.9(1) Å 3, space group P21/c, Z = 2, d calc = 2.918 g/cm3; for II: a = 10.309(2) Å, b = 10.426(2) Å, c = 11.839(2) Å; β = 108.17(3)°, V = 1209.0(4) Å3, space group P21/c, Z = 4, d calc = 3.408 g/cm3. The structures are formed by isolated [Pd(NO3)4]2? complex anions and alkali metal cations. The plane-square environment of the Pd atom is formed from the oxygen atoms of the monodentate nitrate groups. The geometrical characteristics of the complex anions are analyzed. Compound II has a short contact Pd...Cs 3.252 Å. 相似文献
16.
O. V. Andreev O. Yu. Mitroshin I. A. Razumkova 《Russian Journal of Inorganic Chemistry》2007,52(7):1161-1164
Phase diagrams have been designed for the systems Sc2S3-Ln2S3 where Ln = La, Nd, or Gd. In these systems, complex sulfides crystallize in orthorhombic space group Pnma. The sulfides melt congruently and have the following parameters; for LaScS3, a = 0.718 nm, b = 0.654 nm, c = 0.960 nm, 2000 K, 3200 MPa; for NdScS3, a = 0.712 nm, b = 0.646 nm, c = 0.952 nm, 1960 K, 3500 MPa; and for GdScS3, a = 0.704 nm, b = 0.640 nm, c = 0.946 nm, 1900 K, 3400 MPa. The extents of the solid solutions based on the existing phases increase as the effective ion radii of Ln3+ approaches that of Sc3+. At 1670 K, the LnScS3 homogeneity region is 48–52 mol % Nd2S3 and 46–54 mol % Gd2S3. Sc2S3 dissolves 3 mol % Nd2S3 and 6 mol % Gd2S3. γ-Nd2S3 dissolves 2 mol % Sc2S3, and γ-Gd2S3 dissolves 4 mol % Sc2S3. The subsystems Sc2S3-LnScS3 and LnScS3-Ln2S3 are of the eutectic type. The eutectic coordinates are, respectively, 27 mol % La2S3, 1880 K; 75 mol % La2S3, 1800 K; 30 mol % Nd2S3, 1850 K; 74 mol % Nd2S3, 1770 K; 33 mol % Gd2S3, 1800 K; and 74 mol % Gd2S3, 1730 K. 相似文献
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18.
The present research work reports the study on crystal structure, vibrational spectroscopy and thermal analysis of organic-inorganic hybrid compound (C6H5(CH2)2NH3)2CdCl4. Single crystals of bis(phenethylammonium)tetrachlorocadmate (C6H5(CH2)2NH3)2CdCl4 (PEA–Cd) were obtained by diffusion at room temperature. This compound crystallizes in the orthorhombic space group C2cb with unit cell parameters a = 7.4444(2) Å, b = 38.8965(3) Å, c = 7.3737(2) Å and Z = 4. Single crystal structure has been solved and refined to R = 0.036 and wR = 0.092. The structure consists of an extended [CdCl4]2– network and two [C6H5(CH2)2NH3]+ cations to form a two-dimensional perovskite system. The infrared (IR) spectrum of the title compound was recorded at room temperature. Differential scanning calorimetry (DSC) was used to investigate the phase transition; this compound exhibits a reversible single solid-solid phase transition. 相似文献
19.
N. V. Sikerina A. V. Solov’eva E. N. Toroshchin O. V. Andreev 《Russian Journal of Inorganic Chemistry》2007,52(12):1982-1986
Phase equilibria in the BaS-Cu2S-Gd2S3 system have been studied along the 800 K isothermal section and the CuGdS2-BaS, Cu2S-BaGdCuS3, BaGdCuS3-Gd2S3, and BaGdCuS3-BaGd2S4 polythermal sections. Complex sulfide BaGdCuS3 is formed in the title system; it has an orthorhombic KZrCuSe3-type structure (space group Cmcm) with the unit cell parameters equal to a = 0.40529(2) nm, b = 1.34831(6) nm, c = 1.02940(5) nm. This sulfide melts congruently at 1685 K. BaGdCuS3 is in equilibrium with sulfides Cu2S, BaS, Gd2S3, CuGdS2, BaGd2S4, BaCu4S3, and BaCu2S2 and with compositions in the C0 solid-solution region of the Cu2S-Gd2S3 system. Eutectics are formed between compounds CuGdS2 and BaGdCuS3 at 7.0 mol % BaS and T = 1325 K, between BaGdCuS3 and BaS at 64.0 mol % BaS and T = 1625 K, between Cu2S and BaGdCuS3 at 8.0 mol % BaGdCuS3 and T = 1125 K, between Gd2S3 and BaGdCuS3 at 64.0 mol % Gd2S3 and 1495 K, and between BaGdCuS3 and BaGd2S4 at 35 mol % BaGd2S4 and T = 1660 K. 相似文献
20.
O. M. Aliev D. S. Azhdarova V. M. Ragimova T. F. Maksudova 《Russian Journal of Inorganic Chemistry》2018,63(3):383-386
Phase equilibria in the FeSb2S4–FeLa2S4 system were studied by physicochemical analysis methods (differential thermal, X-ray powder diffraction, and microstructural analyses and microhardness and density measurements), and the phase diagram of the system was constructed. The formation of quaternary sulfide FeLaSbS4 melting congruently at 1230 K, an analog of the mineral berthierite FeSb2S4, was detected. The X-ray powder diffraction analysis showed that FeLaSbS4 belongs to the berthierite structural type and crystallizes in the orthorhombic system with the unit cell parameters a = 11.424 Å, b = 14.160 Å, c = 3.782 Å, Z = 4, and space group Pbam. 相似文献