Қазақ ұлттық қыздар педагогикалық университеті / Казахский национальный женский педагогический университет
Постоянный URI для этого сообществаhttps://cris.qyzpu.kz/handle/123456789/1
Просмотр
18 результаты
Результаты поиска
- Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Synthesis of New Complex Ferrite Li0.5MnFe1.5O4, Chemical – Physical and Electrophysical ResearchIn this article, the sol-gel method was used as a synthesis method, which shows the physico –chemical nature of the synthesis of a new complex material ferrit Li0.5MnFe1.5O4. The synthesized structure and structure were determined by the method of X-ray phase analysis. According to the analysis indicators, it was found that our compound is single-phase, spinel-structured, and syngony - cubic type. The microstructure of the compound and the quantitative composition of the elements contained were analyzed under a scanning electron microscope (SEM). Through a scanning electron microscope, Microsystems were taken from different parts of l Li0.5MnFe1.5O4-type crystallite, the elemental composition of crystals was analyzed, and the general type of surface layer of complex ferrite was shown. As a result, the fact that the compound consists of a single phase, the clarity of its construction was determined by the topography and chemical composition of the compound. As a result, it was found that the newly synthesized complex ferrites correspond to the Formula Li0.5MnFe1.5O4. The particles of the formed compounds have a large size (between 50.0 μm, 20.0 μm and 10.0 μm). Electro physical measurements were carried out on the LCR - 800 unit at intervals of 293-483 K and at frequencies of 1.5 and 10 kHz. The increase in frequency to 10 kHz led to a decrease in the value ε in the range of the studied temperature (293-483 K).Цитирования (OpenAlex) 1 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Magnetic and resonance properties of the Y0.5Sr0.5Cr0.5Mn0.5O3 polycrystal(IOP Publishing, 2021-11-01); ; ; - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Manganite Synthesis By Different Methods(Oriental Scientific Publishing Company, 2018-06-25); ; ; A. T. KezdikbaevaOriental 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) 2Цитирования (OpenCitations) 1 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Synthesis and Magnetic Properties of Crystals Bi₂BaFe₄O₁ ₀The paper presents the results of an experimental study of the first synthesized compound in the system Bi2O3-BaO-Fe2O3.It was found that the compound has cubic symmetry, the lattice parameters was determined.Electron microscopy measurements reveal that, in general, elemental composition of different parts of the samples corresponds to Bi2BaFe4O10 formula.According to magnetic measurements, the compound has a magnetic order with the magnetic ordering temperature TC = 700 K.Цитирования (OpenAlex) 3Цитирования (OpenCitations) 3 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Composition and structure of bismuth doped dysprosium manganite(2018-09-29); ; ; ; KezdikbayevaComposition and structure of bismuth doped dysprosium manganiteIn the present work, the multiferroic material Bi 0.8 Dy 0.2 MnO 3 was synthesized by the Pechini method for its further study.As starting materials, bismuth oxide, manganese oxide, dysprosium oxide, nitric acid and urea were used.It is shown that when nitric acid and urea are used as a precipitant, single-phase powders can be obtained.The powder was sintered at various temperatures of 600 ºC, 800 ºC, 900 ºC, respectively, in order to evaluate their optimum sintering temperature based on X-ray profiles.The incorporation of Bi 3+ ions into the perovskite crystal structure was verified by means of X-ray, SEM methods.The XRD revealed that the obtained nanocrystalline Bi 0.8 Dy 0.2 MnO 3 was cubic crystal structure of space group: Fm-3m(225) and lattice parameters were: 5.4763 Å, 5.4763 Å, 5.4763 Å, 90.000, 90.000, 90.000.The density of manganite was determined by the pycnometric method in accordance with State Standard 2211-65.Toluene served as an indifferent fluid.Satisfactory consistency of X-ray and pycnometric densities of manganite confirms the correctness of the results.The results of the electron microscope show that the atomic fractions of the elements practically coincide, which corresponds to the formula of manganite-BDMO. - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, THE COMPOSITION AND STRUCTURE OF BISMUTH-DOPED DYSPROSIUM MANGANITE(2018-12-15); ; 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, Магнитные и резонансные свойства поликристалла Y-=SUB=-0.5-=/SUB=-Sr-=SUB=-0.5-=/SUB=-Cr-=SUB=-0.5-=/SUB=-Mn-=SUB=-0.5-=/SUB=-O-=SUB=-3-=/SUB=-(Pleiades Publishing, 2020-01-01); ; ; Цитирования (OpenAlex) 1Цитирования (OpenCitations) 1 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Magnetic and Resonance Properties of the Y0.5Sr0.5Cr0.5Mn0.5O3 Polycrystal(Pleiades Publishing, 2020-08-01); ; ; Цитирования (OpenAlex) 6Цитирования (OpenCitations) 2