research-focus Research Focus International Scientific Journal Research Focus 2181-3833 Ilm-fan va innovatsiyalar akademiyasi 10.66073/researchfocus.v2i11.588 REL-A-012286 01.00.00 FORMATION OF PHASES IN COMPLEX OXIDES WITH A PYROCHLORE STRUCTURE CONTAINING LITHIUM IONS ОБРАЗОВАНИЕ ФАЗ В СЛОЖНЫХ ОКСИДАХ СО СТРУКТУРОЙ ПИРОХЛОРА, СОДЕРЖАЩИХ ИОНЫ ЛИТИЯ LITIY IONLARINI SAQLOVCHI PIROXLOR TUZILISHLI MURAKKAB OKSIDLARDA FAZALARNING SHAKLLANISHI Kh.N. Bozorov Namangan Engineering and Technology Institute 05 12 2023 2023 2 11 11 16 https://creativecommons.org/licenses/by/4.0 This work is licensed under a Creative Commons Attribution 4.0 International License.

Formation laws of potassium and lithium antimonate-tungstates during heating of complex oxide (y-x)K2CO3-xLi2CO3-ySb2O3-2(2-y)WO3 mixture in air were studied. For a temperature of 1123 K in the KSbO3-WO3-LiSbO3 concentration triangle, the formation zone of LixKy-xSbyW2-yO6 containing phases with a pyrochlore-type structure was determined.

Изучены закономерности образования антимонатов-вольфраматов калия и лития при нагревании смеси сложных оксидов (y-x)K2CO3-xLi2CO3-ySb2O3-2(2- y)WO3 на воздухе. Для температуры 1123 К в концентрационном треугольнике KSbO3- WO3-LiSbO3 определена зона образования LixKy-xSbyW2-yO6, содержащих фазы со структурой типа пирохлора.

Havoda (y-x)K2CO3-xLi2CO3-ySb2O3-2(2-y)WO3 murakkab oksidlar aralashmasini qizdirish jarayonida kaliy va litiy antimonat-volframatlarining hosil bo‘lish qonuniyatlari o‘rganildi. 1123 K harorat uchun KSbO3-WO3-LiSbO3 konsentratsion uchburchagida piroxlor tipidagi tuzilishga ega fazalarni saqlovchi LixKy-xSbyW2-yO6 hosil bo‘lish zonasi aniqlandi.

 ionic conductivity pyrochlore-type structure potassium antimonate tungstate concentration triangle ионная проводимость структура типа пирохлора вольфрамат антимоната калия концентрационный треугольник ion o‘tkazuvchanligi piroxlor tipidagi tuzilish kaliy antimonat volframat konsentratsion uchburchak D.G. Klestchov, V.A. Burmistrov, A.I. Sheinkman, R.N. Pletnev. Composition and structures of phases formed in the process of hydrated antimony pentaoxide thermolysis. J. Solid State Chem. 94 (1), 220–226 (1991). Yu.A.Lupitskaya, V.A. Burmistrov. Ionic conductivity of potassium antimonatungstate upon heterovalent substitution of Sb5+ for W6+ and doping with sodium and lithium ions. J.Modern science: theory and practice. (1), 46–49. (2010). P.J.Baymatov, A.G.Gulyamov, B.T.Abdulazizov, Kh.Yu.Mavlyanov, M.Tokhirjonov. Features of the Chemical Potential of a Quasi-Two-Dimensional Electron Gas at Low Temperatures Features of the Chemical Potential of a Quasi-Two-Dimensional Electron Gas at Low Temperatures. International Journal of Modern Physics B. 2150070. 1-13. (2021), https://doi.org/10.1142/S0217979221500703. E.I. Burmakin. Principles of Targeted Synthesis of Highly Conductive Solid Electrolytes Based on Complex Oxides. Tez. report VI All-Union Conf. in electrochemistry. (3). 285 - 286. (1988). G.Gulyamov, B.T.Abdulazizov, P.J.Baymatov. Three-band simulation of the g-factor of an electron in an InAs quantum well in strong magnetic fields. Journal of Nanomaterials, (2021). Article ID 5542559, https://doi.org/10.1155/2021/5542559. A.I. Efimov and others. Properties of inorganic compounds: Handbook. L.: Chemistry. 392. (1983). E. S. Sokolova, S. S. Sokolov and N. Studar. Chemical potential of the low-dimensional multisubband Fermi gas. J. Phys.: Condens. Matter 22, 465304 (2010). doi.org/10.1088/0953- 8984/22/46/465304. 10.1088/0953-8984/22/46/465304 M. Avdeev, V.B. Nalbandyan, I.L. Shukaev. Alkali Metal Cation and Proton Conductors: Relationship between Composition, Crystal Structure and Properties. Solid State Electrochemistry I, Wiley-VCH, Weinheim. (7). 227-278. (2009). T. Kudo, P.J. Gelling, and H.J.M. Bowmeester, [et al.]. Survey of Types of Solid Electrolytes. Solid State Electrochemistry. 201-228. (2006). B.T. Abdulazizov. Cyclotron mass of an electron in strong magnetic fields in a wide InAs quantum well. Eurasian Journal of Physics and Functional Materials 2022, 6(1), 32-37, DOI: V.G. Trofimov, A.I. Sheinkman, L.M. Goldstein, G.V. Kleshchev. Ophazetypepyrochlorine in the Na-Sb-O system. Crystallography. (16). 438-440. (1971). J. Lian, L. Wang, J. Chen, K. Sun, R.C. Ewing, J.M. Farmer, et al. The order-disorder transition in ion-irradiated pyrochlore. Acta Mater. (51). 1493–1502. (2003). Yu. A. Lupitskaya, V.A. Sviridov, A.V. Cherednichenko, D.A. Kalganov. Ion-conducting materials based on complex antimony oxides. Sat. abstract report L PNPI School of Condensed Matter Physics. 118. (2016). E.V. Suleimanov, N.G. Chernorukov, A.V. Golubev. Synthesis and study of new representatives of the structural type of defective pyrochlore. Journal inorganic chemistry. (49). 357-360. (2004). Yu.A. Lupitskaya, V.A. Bumistrov The structure of the phases formed in the Me 2CO3-Sb2O3- WO3 system upon heating (where Me=K, Na). Vestnik Chelyab. state university. (3). 39 – 43. (2008). O. A. Firsova, Filonenko, Yu.A. Lupitskaya, Kh.N. Bozorov, A.V. Butakov. Ion-Exchange Properties of Solid Solutions Based on Hydrated Forms of Antimonate-Tungstates of Monovalent Metals. Butler messages. (62). 74. (2020). Yu. A. Lupitskaya, V.A. Burmistrov. Phase formation in the K2CO3–Sb2O3–WO3 system upon heating. Journal inorganic chemistry. (56). 329–330. (2011). Yu. A. Lupitskaya, V.A. Burmistrov. Structure of phases formed in the Me2CO3–Sb2O3–WO3 system upon heating (where Me = K, Na). Vestnik Chelyab. state university. (3). 39–43. (2008). Yu. A. Lupitskaya. Investigation of a phase with a pyrochlore-type structure formed in the (y– x)K2CO3–xLi2CO3–ySb2O3–2(2–y)WO3 (0≤x≤y, 1.0 ≤y≤1.375) system upon heating to create ion-conducting ceramics. Sat. abstract report VII All-Russian scientific. conf. Syktyvkar. 57. (2010). Kh.N. Bozorov, Yu.A. Lupitskaya, N.Yu. Sharibaev, G.U. Abdullaeva. Synthesis of xK2CO3- xSb2O3-(2-x)WO3 (0˂x˂2.0) - complex oxide compounds and technology for their production. Scientific Bulletin of NamSU. (12). 98-101. (2021). B. T. Abdulazizov, G. Gulyamov, P. J. Baymatov, Sh. T. Inoyatov, M. S. Tokhirjonov and Kh. N. Juraev. Peculiarities of the Temperature Dependence of the Chemical Potential of a Two-dimensional Electron Gas in Magnetic Field. SPIN 13, 2250002 (2022), DOI:10.1142/S2010324722500023. N. F. Uvarov and V. V. Boldyrev, “Size effects in the chemistry of heterogeneous systems,” Usp. Khim., (70), (2001). doi: 10.1070/rc2001v070n04abeh000638.