Жарияланымдар / Публикации
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Тип записи:Публикация, SYNTHESIS AND X-RAY ANALYSIS OF COMPLEX FERRITE BILIFE2O5.(2017-01-31); ; ;Siddharth Saxena; The paper describes the synthesis and X-ray study of a complex structure of ferrite BiLiFe2O5. Ferrite with mixed complex oxide BiLiFe2O5 was synthesized by high temperature solid state reaction. The structure - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Synthesis and X-Ray Analysis of Complex Ferrites(Trans Tech Publications, 2017-07-01); ; ;Siddharth Saxena; Ferrite with mixed complex oxides BiNaFe2O5, BiKFe2O5 was synthesized by high temperature solid state reaction. The structure of the ferrites, type of syngony, parameters of the unit cells, radiographic and pycnometric densities were determined by X-ray phase analysis for a first time: BiNaFe2O5 – а=5,577, с=13,86 Å, γ=120º, Vun.cell. = 373,9 Å3, Z=4, ρrad.= 7,5262 г/см3, ρpicn.=7,5271 г/см3, BiKFe2O5 –а=5,545, с=13,65 Å, γ=120º, Vun.cell.= 363,45Å3, Z=6, ρrad.= 8,0367, ρpicn.=8,0375 г/см3. A comparative analysis of the relationship between crystal lattice parameters with parameters of the crystal lattice of initial oxides and complex ferrites has been performed. Research dependence of the magnetic moment of the complex ferrite BiNaFe2O5 of the applied magnetic field at a constant temperature T = 6.1405 K showed a paramagnetic shift in the structure.Цитирования (OpenAlex) 3Цитирования (OpenCitations) 3 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Synthesis and X-ray analysis of complex ferrite YbBiNaFe2O6,5(Al-Farabi Kazakh National University, 2017-06-30); ; The complex oxide phase of the composition YbBiNaFe2O6,5 was synthesized by the high-temperature solid-phase reaction. X-ray diffraction analysis was used to study the structure for the first time; the type of syngony, unit cell parameters, X-ray diffraction and pycnometric densities were determined. X-ray diffraction was carried out by homology method from the initial fluorite structure δBi2O3. The method of least squares refined the parameters of the crystal lattice. The parameters of the orthorhombic lattice of complex mixed ferrite at the value of the number of formula units Z=4 are: a=5.2319, в=5.2186, с=7.5702 Å. The correctness of the results of the X-ray diffraction of complex mixed ferrite was confirmed by the good agreement between the experimental and calculated values of the inverse squares of the interplanar distances (104/d2). Satisfactory consistency of the values of the X-ray and pycnometric densities, ρrad = 8.335, ρpik = 8.328 g/cm3, proves the correctness of the results of the experiment. A comparative analysis of the interrelation between the parameters of the crystal lattice and the parameters of the crystal lattices of the initial oxide δBi2O3. The analysis shows the values of the parameters “a” and “c” are in satisfactory agreement with the parameters of the crystal lattice δBi2O3, the parameter “c” is distorted from the value of the parameter “a” on √2. - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, THE COMPOSITION AND STRUCTURE OF BISMUTH-DOPED DYSPROSIUM MANGANITE(2018-12-15); ;[автор не указан в источнике] ;https://orcid.org/0000-0002-9057-5443; The quality and depth of content Web of Science offers to researchers, authors, publishers, and institutions sets it apart from other research databases.The inclusion of Bulletin of NAS RK in the Emerging Sources Citation Index demonstrates our dedication to providing the most relevant and influential multidiscipline content to our community.Қазақстан Республикасы Ұлттық ғылым академиясы "ҚР ҰҒА Хабаршысы" ғылыми журналының Web of Science-тің жаңаланған нұсқасы Emerging Sources Citation Index-те индекстелуге қабылданғанын хабарлайды.Бұл индекстелу барысында Clarivate Analytics компаниясы журналды одан əрі the Science Citation Index Expanded, the Social Sciences Citation Index жəне the Arts & Humanities Citation Index-ке қабылдау мəселесін қарастыруда.Web of Science зерттеушілер, авторлар, баспашылар мен мекемелерге контент тереңдігі мен сапасын ұсынады.ҚР ҰҒА Хабаршысының Emerging Sources Citation Index-ке енуі біздің қоғамдастық үшін ең өзекті жəне беделді мультидисциплинарлы контентке адалдығымызды білдіреді.НАН РК сообщает, что научный журнал «Вестник НАН РК» был принят для индексирования в Emerging Sources Citation Index, обновленной версии Web of Science.Содержание в этом индексировании находится в стадии рассмотрения компанией Clarivate Analytics для дальнейшего принятия журнала в the Science Citation Index Expanded, the Social Sciences Citation Index и the Arts & Humanities Citation Index.Web of Science предлагает качество и глубину контента для исследователей, авторов, издателей и учреждений - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, SYNTHESIS AND X-RAY DIFFRACTION STUDY OF THE CHROMITE-MANGANITESIn this work synthesized new chromite-manganite phases using sol-gel method and their composition was studied by X-ray method. Chromium oxide, manganese oxide, yttrium oxide, metal carbonates, citric acid and glycerin were used as starting materials. It is shown that the use of citric acid and glycerol as precipitant, giving a positive effect to monophase samples. Precipitate was subjected to homogenizing roast in the temperature range from 600 to 1100°C, reaching the level of sintering samples were controlled by the basis of X-ray diffraction profiles. All the X-ray reflection lines have been successfully indexed according to the orthorhombic perovskite structure with space group: Pbnm (62) and with the following parameters: Y(1-x)MgCr0,5Mn0,5O3,(x≈0,7) –а=5.557, b=7.515, с=5.252 A, Z = 4; Y(1-x)BaCr0,5Mn0,5O3, (x≈0,7) –а=9.102, b=5.533, с=7.330 A, Z = 4; Y(1-x)SrCr0,5Mn0,5O3, (x≈0,7) –а=7.109, b=7.436, с=6.756 A, Z = 4. References [1] Lewis N.S., Nocera D.G. Electromicrobiology: An Emerging Reality – A Review // Proc. Natl. Acad. Sci. USA. 2006. N 103. P. 15729. [2] Turner J.A. A Realizable Renewable Energy Future // Science. 1999. N 285. P. 687-689. [3] Kreuter W., Hofmann H. Electrolysis: the important energy transformer in a world of sustainable energy // Int. J. Hydrogen Energy. 1998. N 23. Р. 661-666. [4] Singhal S.C., Kendall K. High-temperature Solid Oxide Fuel Cells: Fundamentals, Design and Applications // High-Temperature Solid Oxide Fuel Cells: Fundamentals, Design and Applications. Elsevier Science, Oxford, UK, 2003. ISSN 1813-1107 3 2019 [5] Chroneos A., Yildiz B., Tarancon A., Parfitt D., Kilner J.A. Prediction of solid oxide fuel cell cathode activity with first-principles descriptors // Energy Environ. Sci. 2011. N 4. Р. 3966-3970. [6] Bockris J.O’M., Otagawa T. The Electrocatalysis of Oxygen Evolution on Perovskites // Elecrochem. Soc. 1984. N 131. Р. 290-302. [7] Man I.C., Su H.-Y., Calle-Vallejo F., Hansen H.A., Martнnez J.I., Inoglu N.G., Kitchin J., Jaramillo T.F., Nшrskov J.K., Rossmeisl J. Universality in Oxygen Evolution Electrocatalysis on Oxide Surfaces // ChemCatChem. 2011. N 3. Р. 1159-1165. [8] Skinner S.J. Recent advances in Perovskite-type materials for solid oxide fuel cell cathodes // Int. J. Inorg. Mater. 2001. N 3. Р. 113-121. [9] Haile S.M. Fuel cell materials and components // Acta Mater. 2003. N 51. Р. 5981-6000. [10] Jacobson A.J. Materials for Solid Oxide Fuel Cells // Chem. Mater. 2010. N 22. Р. 660-674. [11] Suntivich J., Gasteiger H.A., Yabuuchi N., Nakanishi H., Goodenough J.B., Shao-Horn Y. Design principles for oxygen-reduction activity on perovskite oxide catalysts for fuel cells and metal-air batteries // Nat. Chem. 2011. N 3. Р. 546-550. [12] Hong W.T., Risch M., Stoerzinger K.A., Grimaud A., Suntivich J., Shao-Horn Y. Toward the rational design of non-precious transition metal oxides for oxygen electrocatalysis // Energy Environ. Sci. 2015. N 8. Р. 1404-1427. [13] Shabanova N.A., Sarkisov P.D. Osnovy zol-gel tehnologii nanodispersnogo kremnezema. M.: IKTs «Akademkniga», 2004. 208 p. [14] Kasenov B.K., Kasenova Sh.B., Sagintaeva J.I. Dvoinye i troinye manganity, ferrity i khromity elochnyh, elochnozemelnyh i redkozemelnyh metallov // M., 2017. [15] Mataev M.M., Saxena S.M., Patrin G.S., Tursinova Zh.Y., Kezdikbayeva A.T., Nurbekova M.A., Baitasheva G.U. Manganite synthesis by different methods // Oriental jornal of chemistry. 2018. N 34(3). P. 1312-1316. [16] Mataev M.M., Patrin G.S., Tursinova Zh.Y., Abdraimova M.R.,Yurkin G.Yu. Synthesis and Magnetic Properties of crystals Bi2BaFe4O10 // Journal of Siberian Federal University. Mathematics & Physics. 2018. N 11(4). Р. 411-415. - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Synthesis and Analysis of Chromium and Calcium Doped YMNO3(Oriental Scientific Publishing Company, 2019-06-25); ; ; ; Oriental Journal of Chemistry is a peer reviewed quarterly research journal of pure and applied chemistry. It publishes standard research papers in almost all thrust areas of current chemistry of academic and commercial importance. It provides a platform for rapid publication of quality research papers, reviews and chemistry letters. Oriental Journal of Chemistry is abstracted and indexed in almost all reputed National and International agencies.Цитирования (OpenAlex) 4Цитирования (OpenCitations) 3 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Novel 7-Aryliden-3,3a,4,5,6,7-(hexahydro-5-(2-ethoxyethyl)-2-phenyl- 3-aryl-2H-pyrazolo[4,3-c]pyridine Hydrochloride: Synthesis and Structure(2022-03-31); ;V. К. Yu ;Iskakova Tynyshtyk Kadyrovna; Kayrat M. BeketovA Claisen-Schmidt type reaction of 1-(2-ethoxyethyl)piperidin-4-one with different aromatic aldehydes led to corresponding dienones with a yield of 65‒71%. 7-Arylidene-3,3a,4,5,6,7-(hexahydro-5-(2-ethoxyethyl)-2-phenyl-3-aryl-2H-pyrazolo[4,3-c]pyridines were synthesized by heterocyclization of 3,5-diarylidene-piperidin-4-ones with phenylhydrazine hydrochloride in methanol at 70 °C over 4‒6 h. The X-ray crystal structure determination of 7-(p-methoxybenzyliden)-3,3a,4,5,6,7-(hexahydro-5-(2-ethoxyethyl)-2-phenyl-3-(p-methoxyphenyl)-2H-pyrazolo[4,3-c]pyridine hydrochloride (the deposition number is CCDC 862410) was completed. The piperidine and pyrazoline rings are close to a chair and envelope conformations, respectively. - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Synthesis of New Symmetrical Diamidophosphates Based on meta-Phenylenediamine under Microwave Irradiation(Pleiades Publishing, 2023-06-01); ; ;Alexander Romanovich Burilov ;Nurgali AkylbekovElena ChugunovaAbstract A new series of diphosphorylated amidophosphates was obtained as a result of the reaction of meta-phenylenediamine with dialkyl phosphites in the presence of CCl4 and triethylamine (Atherton–Todd reaction) under microwave irradiation. Structure of all the obtained amidophosphates was established on the basis of 31P, 1H, 13C NMR, IR spectroscopy and mass spectrometry methods, as well as single crystal X-ray diffraction and elemental analysis data.Цитирования (OpenAlex) 5Цитирования (OpenCitations) 2 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Synthesis of new symmetrical diamidophosphates based on meta-phenylenediamine under microwave irradiation(Pleiades Publishing, 2023-06-15); ; ;Alexander Romanovich Burilov ;Nurgali AkylbekovElena ChugunovaA new series of diphosphorylated amidophosphates was obtained as a result of the reaction of meta -phenylenediamine with dialkylphosphites in the presence of CCl4 and triethylamine (Atherton-Todd reaction) under microwave irradiation. Structure of all the obtained amidophosphates was established on the basis of 31P, 1H, 13C NMR, IR spectroscopy and mass spectrometry methods, as well as single crystal X-ray diffraction and elemental analysis data. - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, DFT studies of BaTiO3(2023-06-30) ;Талгат Муратович Инербаев ;Zh. Ye. Zakiyeva ;Fatima U. Abuova ;Aisulu U. AbuovaS. A. NurkenovThe structure of stable phases is investigated using first-principle calculations based on the functionals: LDA, GGA and newly developed general-purpose heavily constrained and appropriately normalized meta GGAfunctional (SCAN). The purpose of this study is to theoretically study the atomic displacements and band gap of the cubic, tetragonal, orthorhombic, rhombohedral perovskite phases for the comparison LDA, GGA-PBE and meta-GGA functionals using the density functional theory method. The obtained data of the density of states (DOS) showed that the values of the band gap energies are underestimated, and the DOS values show that the upper part (valence band) mainly consists of O 2p orbitals, the lower part (conduction band) consists of Ti 3d orbitals. The rhombohedral phase has a mixed composition of Ti states in the conduction band with a greater degree of 3dz2 than 3dxy. The values of the energies of the band gap (Egap) and the density of states show reasonable agreement with experimental and theoretical data. The LDA functional and, to a lesser extent, the GGA - PBE functional can also provide fairly accurate information about atomic displacements in these crystals. The values calculated by the SCAN functional do not differ much from the GGA and LDA functionals.Цитирования (OpenAlex) 4Цитирования (OpenCitations) 3
