Inorganic Materials最新文献_第2页

Cation-Substituted Tricalcium Phosphate-Based Materials 阳离子取代磷酸三钙基材料

IF 0.7 4区材料科学

Inorganic Materials Pub Date : 2025-06-30 DOI: 10.1134/S0020168525700372

I. V. Fadeeva, D. V. Deyineko, I. I. Preobrazhenskiy, V. N. Lebedev

引用次数: 0

Effect of Annealing on the Electrical Conductivity and Thermoelectric Power of PbTe, SnTe, and Pb0.75Sn0.25Te Crystals 退火对PbTe、SnTe和Pb0.75Sn0.25Te晶体电导率和热电性能的影响

IF 0.7 4区材料科学

Inorganic Materials Pub Date : 2025-06-30 DOI: 10.1134/S0020168525700281

G. Z. Bagiyeva, A. Sh. Abdinov, T. J. Aliyeva, J. Sh. Abdinov

引用次数: 0

Preparation of Gas-Sensing Thin Sr2+-Doped YFeO3 Films 气敏Sr2+掺杂YFeO3薄膜的制备

IF 0.7 4区材料科学

Inorganic Materials Pub Date : 2025-06-30 DOI: 10.1134/S0020168525700232

V. F. Kostryukov, A. S. Parshina, I. Ya. Mittova

引用次数: 0

Bioinorganic Catalyst for Aerobic Oxidation of Hydrocarbons 用于烃类有氧氧化的生物无机催化剂

IF 0.7 4区材料科学

Inorganic Materials Pub Date : 2025-06-30 DOI: 10.1134/S0020168525700256

E. B. Zeynalov, E. R. Huseynov, S. K. Sharifova, A. B. Huseynov, F. A. Abdullayeva, E. I. Suleimanova

{"title":"Bioinorganic Catalyst for Aerobic Oxidation of Hydrocarbons","authors":"E. B. Zeynalov, E. R. Huseynov, S. K. Sharifova, A. B. Huseynov, F. A. Abdullayeva, E. I. Suleimanova","doi":"10.1134/S0020168525700256","DOIUrl":"10.1134/S0020168525700256","url":null,"abstract":"Carbon nanotubes can be used as active matrices for accommodation and transfer of biomodeling components. It seems likely that the application area of such systems can include reactions ensuring aerobic and peroxide oxidation of hydrocarbons. Here, we report a study of iron-containing multiwalled carbon nanotubes (Fe@MWCNTs) and manganese glycinate dihydrate ([NH2CH2COO]2Mn∙2H2O) as an active catalytic system for aerobic oxidation of hydrocarbons. The synthesized starting compounds were identified using infrared spectroscopy, electron microscopy, and elemental analysis. Aerobic oxidation of cumene was used as a model test reaction. The results demonstrate that, taken alone, each compound increases the reaction rate by 10–12 times in comparison with a control sample, whereas in the case of the joint use of Fe@MWCNTs and manganese glycinate dihydrate the reaction rate rises many times, reaching 373 mm3 O2/min. We have proposed a scheme of the oxidation process, which describes the observed synergistic effect. The use of such catalytic systems is of interest for further research in the field of bioinorganic catalysis.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 13","pages":"1438 - 1443"},"PeriodicalIF":0.7,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermodynamic Analysis of Vapor Phase Growth of Fe:ZnSe Single Crystals Fe:ZnSe单晶气相生长的热力学分析

IF 0.7 4区材料科学

Inorganic Materials Pub Date : 2025-06-30 DOI: 10.1134/S0020168525700311

V. I. Kozlovsky, Yu. V. Korostelin

{"title":"Thermodynamic Analysis of Vapor Phase Growth of Fe:ZnSe Single Crystals","authors":"V. I. Kozlovsky, Yu. V. Korostelin","doi":"10.1134/S0020168525700311","DOIUrl":"10.1134/S0020168525700311","url":null,"abstract":"Fe:ZnSe single crystals are promising materials for mid-infrared (4–5 μm) lasers. Here we present thermodynamic analysis of the vapor phase growth of Fe:ZnSe single crystals by a modified free growth method. Doping with Fe atoms was performed during the growth process. The single crystals were grown from sublimates of the binary compounds ZnSe and FeSe placed in separate source compartments. Vapors of the starting materials were directed to a single-crystal seed in the growth zone through calibrated orifices. Calculations were performed for physical transport in a helium atmosphere. We took into account three main steps of the growth process: vaporization of the starting materials in the source compartments, transport of the vapor to the growth zone, and crystal growth on the seed. The rate of the growth process was assumed to be limited by mass transport from the source to the growth zone, controlled by the geometric dimensions and mutual arrangement of the elements of the growth ampule. The experimental data on the dopant concentration are compared to the calculation results. The proposed growth technique is shown to ensure preparation of single crystals up to 8 cm3 in volume, with a Fe concentration of up to 5 × 1018 cm–3.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 14","pages":"1564 - 1569"},"PeriodicalIF":0.7,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermophysical Properties of PbFe0.5Ta0.5O3 Ferroelectric Ceramics with Nanopolar Structure 纳米结构PbFe0.5Ta0.5O3铁电陶瓷的热物理性质

IF 0.7 4区材料科学

Inorganic Materials Pub Date : 2025-06-30 DOI: 10.1134/S0020168525700293

S. N. Kallaev, A. G. Bakmaev, Z. M. Omarov, K. Bormanis

{"title":"Thermophysical Properties of PbFe0.5Ta0.5O3 Ferroelectric Ceramics with Nanopolar Structure","authors":"S. N. Kallaev, A. G. Bakmaev, Z. M. Omarov, K. Bormanis","doi":"10.1134/S0020168525700293","DOIUrl":"10.1134/S0020168525700293","url":null,"abstract":"The thermophysical properties of the PbFe0.5Ta0.5O3 relaxor ferroelectric have been studied in the temperature range 150–800 K. We have revealed anomalies in its heat capacity, thermal diffusivity, and thermal conductivity in the region of the broad ferroelectric transition at TC ≈ 275 K, the Burns temperature TB ≈ 690 K, and an intermediate temperature T* ≈ 380 K. The anomalous behavior of heat capacity in the temperature range 200–700 K has been shown to be due to three-level states (Schottky anomaly). We have examined prevailing phonon mechanisms of heat transport in the multiferroic with a nanopolar structure. The anomalous behavior of its thermophysical properties in the temperature range TB > T > TC has been attributed to the growth and changes in the system of reorientable nanopolar regions. We have demonstrated that studies of thermophysical properties allow one to determine all characteristic temperatures of relaxor ferroelectrics, related to the formation of a nanopolar structure and its variation with temperature. The results of this study are discussed in combination with structure data.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 15","pages":"1633 - 1639"},"PeriodicalIF":0.7,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrical Transport, Mechanical and Tribological Properties of Composites Produced by Sintering Shock-Synthesized Nanopolycrystalline Diamond Particles 烧结冲击合成纳米聚晶金刚石颗粒复合材料的电传输、力学和摩擦学性能

IF 0.7 4区材料科学

Inorganic Materials Pub Date : 2025-06-30 DOI: 10.1134/S0020168525700384

E. A. Ekimov, V. A. Sidorov, A. A. Karabutov, A. A. Shiryaev, E. I. Drozdova, I. N. Lukina, O. P. Chernogorova

{"title":"Electrical Transport, Mechanical and Tribological Properties of Composites Produced by Sintering Shock-Synthesized Nanopolycrystalline Diamond Particles","authors":"E. A. Ekimov, V. A. Sidorov, A. A. Karabutov, A. A. Shiryaev, E. I. Drozdova, I. N. Lukina, O. P. Chernogorova","doi":"10.1134/S0020168525700384","DOIUrl":"10.1134/S0020168525700384","url":null,"abstract":"Electrically conductive carbon nanomaterials possessing high mechanical and tribological properties are in high demand for a wide range of applications. In the context of the potential usage, functional characteristics of composite materials produced by HPHT sintering of shock-synthesized nanopolycrystalline diamond powders have been investigated for the first time. Nanodiamonds powders with narrow and polydisperse granulometric distributions were sintered both without a binder and after infiltration with copper and silicon at pressures of 8–9 GPa and temperatures up to 1600°C. The binder-less sintered nanodiamond compacts are characterized by a hardness up to 33 GPa, electrical conductivity of ~6600 Sm–1, and a friction coefficient on hardened steel as small as 0.07. Silicon infiltration leads to somewhat smaller conductivity (~190 Sm–1), but produces compacts with hardness increased up to 48 GPa, improved mechanical properties and a low friction coefficient (~0.04). Copper infiltration sintering generally replicates functional properties of the compacts without a binder. However, in contrast to composites with copper, the compacts obtained without a binder and infiltrated with silicon demonstrate semiconductor-type conductivity, favorable for high-temperature applications. The sintering parameters are readily accessible with modern instrumentation, thus opening opportunities for broad use of compacts based on shock-synthesized polycrystalline nanodiamonds, for example, in miniature sliding bearings and electrical contacts working in severe conditions.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 15","pages":"1585 - 1592"},"PeriodicalIF":0.7,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical MgO Ceramics Fabricated by Hot Pressing with LiF LiF热压制备MgO光学陶瓷

IF 0.7 4区材料科学

Inorganic Materials Pub Date : 2025-06-30 DOI: 10.1134/S0020168525700347

S. S. Balabanov, A. B. Belyaev, V. A. Koshkin, D. A. Permin

{"title":"Optical MgO Ceramics Fabricated by Hot Pressing with LiF","authors":"S. S. Balabanov, A. B. Belyaev, V. A. Koshkin, D. A. Permin","doi":"10.1134/S0020168525700347","DOIUrl":"10.1134/S0020168525700347","url":null,"abstract":"This study presents the results of an investigation into the hot pressing of optical magnesium oxide (MgO) ceramics from powders synthesized via the self-propagating high-temperature synthesis (SHS) method. A preprocessing technique for industrially produced raw materials is proposed to adjust their impurity composition to a level sufficient for obtaining high-quality optical ceramics. The addition of 1 wt % LiF as a sintering aid to the SHS precursor enables the fabrication of MgO ceramics with a thickness of 1.5 mm, achieving near-theoretical transmittance across the material’s transparency range (0.2–9.5 µm). It is demonstrated that even a small amount of LiF (as low as 0.125 wt %) significantly enhances the transparency of the ceramics; however, it also leads to a substantial reduction in thermal conductivity within the studied temperature range (25–300°C). The thermal conductivity of MgO ceramics without the sintering aid is measured at 67.7 W/(m K) at room temperature. The microhardness of the fabricated ceramic samples remains largely unaffected by the LiF content in the precursor, with values ranging from 9 to 11 GPa.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 15","pages":"1610 - 1618"},"PeriodicalIF":0.7,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bond Lengths and An 4f Electron Energies in AnO2 (An = Cf–Lr) AnO2 （An = Cf-Lr）中的键长和an4f电子能

IF 0.7 4区材料科学

Inorganic Materials Pub Date : 2025-06-30 DOI: 10.1134/S0020168525700219

Yu. A. Teterin, A. E. Putkov, A. Yu. Teterin, M. V. Ryzhkov, K. I. Maslakov, K. E. Ivanov, S. N. Kalmykov, V. G. Petrov

{"title":"Bond Lengths and An 4f Electron Energies in AnO2 (An = Cf–Lr)","authors":"Yu. A. Teterin, A. E. Putkov, A. Yu. Teterin, M. V. Ryzhkov, K. I. Maslakov, K. E. Ivanov, S. N. Kalmykov, V. G. Petrov","doi":"10.1134/S0020168525700219","DOIUrl":"10.1134/S0020168525700219","url":null,"abstract":"Extrapolation of available experimental data for AnO2 (An = Th, U–Bk), represented on a unified binding energy scale on which Eb(O 1s) = 529.9 eV, has been used to evaluate bond lengths and An 4f electron binding energies in AnO2 (An = Cf–Lr). The bond lengths thus found are in qualitative agreement with results obtained in the ionic approximation, and the An 4f electron binding energies have been determined with an uncertainty of ±0.4 eV, which is an order of magnitude smaller than that in available reference values. The results obtained on the structure of the actinide dioxides are needed for relativistic calculations of valence band X-ray photoelectron spectra of AnO2, and the An 4f electron binding energies are needed for constructing quantitative schemes of molecular orbitals in AnO2. These data will be useful for understanding general aspects of the formation of specific features of the electronic structure and chemical bonding in the AnO2 (An = Th–Lr) series.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 13","pages":"1491 - 1495"},"PeriodicalIF":0.7,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization of Titanium Carbide Prepared from Titanium-Containing Concentrate in a Microwave-Assisted Combined Plasma System 含钛精矿微波辅助复合等离子体法制备碳化钛的研究

IF 0.7 4区材料科学

Inorganic Materials Pub Date : 2025-06-30 DOI: 10.1134/S0020168525700220

D. I. Balakhonov, S. V. Nikolenko, L. A. Konevtsov

引用次数: 0